Answer:
Future value is calculated using the formula:
FV = PV*(1+r)n
FV = Future value, PV = Present vlaue, r = interest rate
C1 = 865, C2 = 1040, C3 = 1290, C4 = 1385
FV of C1 at t:4 = C1*(1+r)3
FV of C2 at t:4 = C2*(1+r)2
FV of C3 at t:4 = C3*(1+r)1
FV of C4 at t:4 = C4*(1+r)0 = C4
Future value is the sum of Future values of all the cash flows
Future value = C1*(1+r)3 + C2*(1+r)2 + C3*(1+r)1 + C4
a. When discount rate = r = 8%
Future value = C1*(1+r)3 + C2*(1+r)2 + C3*(1+r)1 + C4 = 865*(1.08)3 + 1040*(1.08)2 + 1290*(1.08)1 + 1385
Future value = 1089.65088 + 1213.056 + 1393.2 + 1385 = 5080.90688
b. When Discount rate = r = 11%
Future value = C1*(1+r)3 + C2*(1+r)2 + C3*(1+r)1 + C4 = 865*(1.11)3 + 1040*(1.11)2 + 1290*(1.11)1 + 1385 = 1183.000815 + 1281.384 + 1431.9 + 1385 = 5281.284815
c. When discount rate = r = 24%
Future value = C1*(1+r)3 + C2*(1+r)2 + C3*(1+r)1 + C4 = 865*(1.24)3 + 1040*(1.24)2 + 1290*(1.24)1 + 1385
Future value = 1649.22976 + 1599.104 + 1599.6 + 1385 = 6232.93376