Finding the Fourth Proportional to 2,214.62, 3,323.46 and 916.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,214.62 : 3,323.46 = 916.10 : x
2. Step 2: Convert to fraction form
   2,214.62/3,323.46 = 916.10/x
3. Step 3: Cross multiply
   2,214.62x = 3,323.46 × 916.10
4. Step 4: Simplify right side
   2,214.62x = 3,044,621.71
5. Step 5: Solve for x
   x = 3,044,621.71/2,214.62
6. Step 6: Final answer
   x = 1,374.78