after one year he will have
319.25*1.026
on his bank account
Next year we have to multiply new value again with 1.026 to get new value.
that means that after 14 years he will have:
319.25*1.026^14 = $457.29
If however 2.6% is for his starting money each year than his balance after 14 years will be:
319.25+(319.25*14*0.026) = 435.46
