Final answer:
The predetermined factory overhead rate can be calculated by dividing the total factory overhead costs by the total shop direct labor cost. In this case, the predetermined factory overhead rate is $2.75 per dollar of shop direct labor cost.
Step-by-step explanation:
The predetermined factory overhead rate is calculated by dividing the estimated factory overhead costs by the estimated amount of the allocation base. In this case, the allocation base is the shop direct labor cost. The total shop direct labor cost is $968,000. To calculate the predetermined factory overhead rate, divide the total factory overhead costs ($2,660,600) by the total shop direct labor cost ($968,000):
Predetermined factory overhead rate = Total factory overhead costs / Total shop direct labor cost
Predetermined factory overhead rate = $2,660,600 / $968,000
Predetermined factory overhead rate = $2.75 per dollar of shop direct labor cost