Finding the Fourth Proportional to 1,056.69, 1,458.24 and 614.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.69 : 1,458.24 = 614.55 : x
2. Step 2: Convert to fraction form
   1,056.69/1,458.24 = 614.55/x
3. Step 3: Cross multiply
   1,056.69x = 1,458.24 × 614.55
4. Step 4: Simplify right side
   1,056.69x = 896,161.39
5. Step 5: Solve for x
   x = 896,161.39/1,056.69
6. Step 6: Final answer
   x = 848.08