Answer:
$3,220
Explanation:
total preferred dividends per year = 2,600 x $20 x 5.5% = $2,860
if $2,500 were paid during year 1, $2,860 - $2,500 = $360 remain to be paid during year 2.
Before common dividends can be paid, the company must first pay $2,860 + $360 = $3,220 in cumulative preferred dividends
If the preferred dividends were not cumulative, then if they are not paid during one year, they will be lost. Only cumulative preferred dividends accumulate from one year to another (or for several years).