Show work please.

Exxon Mobil Corp. (rated AAA by S&P) issues an 8-year $1000 par value bond that pays semi-annual coupons. Coupon rate is 3.5%. The bond is priced at $1306.59. At the same time Valero Corp. (rated BBB by S&P) issues a similar bond with same maturity, par value, and coupon rate. However, the coupon frequency is quarterly. The BBB-AAA spread is 2.6%. Find the bond price of Valero Corp.