Finding the Fourth Proportional to 1,056.80, 1,458.41 and 614.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.80 : 1,458.41 = 614.72 : x
2. Step 2: Convert to fraction form
   1,056.80/1,458.41 = 614.72/x
3. Step 3: Cross multiply
   1,056.80x = 1,458.41 × 614.72
4. Step 4: Simplify right side
   1,056.80x = 896,503.43
5. Step 5: Solve for x
   x = 896,503.43/1,056.80
6. Step 6: Final answer
   x = 848.32