You want to buy an IBM personal computer which will cost $$2,788$ four years from today. You would like to set aside an equal amount at the end of each year to accumulate the amount needed. You can earn a $7\%$ annual return. How much should you set aside?

a

$$697\mathrm{.}00$

b

$$627\mathrm{.}94$

c

$$823\mathrm{.}15$

d

$$531\mathrm{.}81$