Finding the Fourth Proportional to 1,056.27, 1,457.65 and 614.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.27 : 1,457.65 = 614.21 : x
2. Step 2: Convert to fraction form
   1,056.27/1,457.65 = 614.21/x
3. Step 3: Cross multiply
   1,056.27x = 1,457.65 × 614.21
4. Step 4: Simplify right side
   1,056.27x = 895,296.69
5. Step 5: Solve for x
   x = 895,296.69/1,056.27
6. Step 6: Final answer
   x = 847.60