The cost of materials transferred into the Rolling Department of Blackrock Steel Company is $625,500 from the Casting Department. The conversion cost for the period in the Rolling Department is $157,680 ($94,600 factory overhead applied and $63,080 direct labor). The total cost transferred to Finished Goods for the period was $724,200. The Rolling Department had a beginning inventory of $38,020. 

a. Journalize 

(1) The cost of transferred-in materials.

(2) Conversion costs.

(3) The costs transferred out to Finished Goods.

b. Determine the balance of Work in Process—Rolling at the end of the period.