Periodic Inventory by Three Methods Dymac Appliances uses the periodic inventory system. Details regarding the inventory of appliances at January 1, purchases invoices during the next 12 months, and the inventory count at December 31 are summarized as follows: Purchases Invoices Model Inventory, January 1 1st 2nd 3rd Inventory Count, December 31 A10 __ 4 at $ 26 4 at $ 29 4 at $ 32 5 B15 8 at $ 86 4 at 77 3 at 83 6 at 90 7 E60 3 at 75 3 at 65 15 at 68 9 at 70 5 G83 7 at 233 6 at 241 5 at 251 10 at 250 9 J34 12 at 77 10 at 79 16 at 86 16 at 87 13 M90 2 at 109 2 at 111 3 at 129 3 at 131 5 Q70 5 at 155 4 at 165 4 at 170 7 at 175 8 Required: 1. Determine the cost of the inventory on December 31