Please answer by hand and not excel!

Jason is diligent about depositing a portion of his earnings each year. He invests $1,100 at the end of year 1, $1,700 at the end of year 2, $1,150 at the end of year 3 and $2,100 at the end of year 4 into a savings account. The savings account yields 2.5% for the first two years and 3.5% in years 3 and 4. How much would Jason have in his savings account at the end of year 4?