Finding the Fourth Proportional to 1,056.55, 1,457.97 and 614.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.55 : 1,457.97 = 614.42 : x
2. Step 2: Convert to fraction form
   1,056.55/1,457.97 = 614.42/x
3. Step 3: Cross multiply
   1,056.55x = 1,457.97 × 614.42
4. Step 4: Simplify right side
   1,056.55x = 895,802.86
5. Step 5: Solve for x
   x = 895,802.86/1,056.55
6. Step 6: Final answer
   x = 847.86