(6 pts) AF = $1000 face (par) value bond is redeemable at par with 4 coupon payments. This bond also has periodic coupon rater 5.2% = 0.052, has periodic yield rate i = 6.73% - 0.0673. Its values at timet, where t = 0, 1, 2, 3, 4 are: B = $947.86, R = $959.65, P = 8972.23, P = $985.67, and P1 = $1000. Use the semi-theoretical method to approximate the "book value" (or "clean price") P2.25P +0.25 (o k = 0.25). Show the formula and how the numbers go in the formula