Answer:
In the activity based costing system, the costs are always allocated to unit product on a more fairer basis which is allocating cost pools on the cost driver basis and always remember that these cost pools originated by breaking the total overhead costs. This total Overhead cost is used only in absorption costing and absorbed on not a fairer basis (only uses only one basis of allocation which is either machine hours or labor hours).
Explanation:
The cost driver for setting up batches is number of batches, processing customer orders is customer order and that of Assembling products is assembly hours.
So
Setting up batches cost per Product X26X = $78.6 * 34 = $2672.4
Processing Customer Orders per Product X26X = $59.4 * 1 = $59.4
Assembling products cost per Product X26X = $1.58 * 369= $583.2
Total overhead cost assigned to unit product = $3315