Finding the Fourth Proportional to 1,056.01, 1,457.32 and 613.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.01 : 1,457.32 = 613.75 : x
2. Step 2: Convert to fraction form
   1,056.01/1,457.32 = 613.75/x
3. Step 3: Cross multiply
   1,056.01x = 1,457.32 × 613.75
4. Step 4: Simplify right side
   1,056.01x = 894,430.15
5. Step 5: Solve for x
   x = 894,430.15/1,056.01
6. Step 6: Final answer
   x = 846.99