Finding the Fourth Proportional to 1,056.35, 1,457.78 and 614.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.35 : 1,457.78 = 614.27 : x
2. Step 2: Convert to fraction form
   1,056.35/1,457.78 = 614.27/x
3. Step 3: Cross multiply
   1,056.35x = 1,457.78 × 614.27
4. Step 4: Simplify right side
   1,056.35x = 895,471.09
5. Step 5: Solve for x
   x = 895,471.09/1,056.35
6. Step 6: Final answer
   x = 847.70