In October, the cost of materials transferred into the Rolling Department from the Casting Department of Jabari Steel Company is $580,800. The conversion cost for the period in the Rolling Department is $104,700 ($61,400 factory overhead applied and $43,300 direct labor). The total cost transferred to Finished Goods for the period was $540,000. The Rolling Department had a beginning inventory of $21,700. a1. Journalize the cost of transferred-in materials for the Rolling Department. If an amount box does not require an entry, leave it blank. a2. Journalize the conversion costs for the Rolling Department. If an amount box does not require an entry, leave it blank. a3. Journalize the costs transferred out to Finished Goods for the Rolling Department. If an amount box does not require an entry, leave it blank. b. Determine the balance of Work in Process-Rolling at the end of the period. $