Finding the Fourth Proportional to 1,056.28, 1,458.16 and 614.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.28 : 1,458.16 = 614.10 : x
2. Step 2: Convert to fraction form
   1,056.28/1,458.16 = 614.10/x
3. Step 3: Cross multiply
   1,056.28x = 1,458.16 × 614.10
4. Step 4: Simplify right side
   1,056.28x = 895,454.52
5. Step 5: Solve for x
   x = 895,454.52/1,056.28
6. Step 6: Final answer
   x = 847.75