you can use the formula A=P(1+r/n)^nt
A=the future value of the starting amount
P=the starting amount
r= the interest rate number of times the interest is compounded per year
t=the number of years the amount is loaned for
A=900(1+0.03/1)^1x4
A=1012.95
I hope this helps. Also if I am wrong our did not fallow the question completely please let me know in the comments so that I can try to fix it .