Sally's Hardware uses a weighted average process costing system. For the month of September, the lumber department reported the following information: equivalent units for direct materials ...... 33,310 equivalent units for conversion costs ...... 63,840 Department A reported the following information related to its work in process inventory account:  % complete % complete  units DM conversion work in process, Sept. 1 26,000 92% 63% work in process, Sept. 30 43,000 17% 88% The cost of beginning work in process and the costs added during September were as follows: DM Conversion work in process, Sept. 1 $ 69,951 $ 73,416 costs added during September 499,650 204,288 Calculate the total cost of the lumber department's work in process inventory at September 30.