Finding the Fourth Proportional to 1,056.16, 1,457.52 and 614.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.16 : 1,457.52 = 614.20 : x
2. Step 2: Convert to fraction form
   1,056.16/1,457.52 = 614.20/x
3. Step 3: Cross multiply
   1,056.16x = 1,457.52 × 614.20
4. Step 4: Simplify right side
   1,056.16x = 895,208.78
5. Step 5: Solve for x
   x = 895,208.78/1,056.16
6. Step 6: Final answer
   x = 847.61