Finding the Fourth Proportional to 1,056.15, 1,457.59 and 614.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.15 : 1,457.59 = 614.03 : x
2. Step 2: Convert to fraction form
   1,056.15/1,457.59 = 614.03/x
3. Step 3: Cross multiply
   1,056.15x = 1,457.59 × 614.03
4. Step 4: Simplify right side
   1,056.15x = 895,003.99
5. Step 5: Solve for x
   x = 895,003.99/1,056.15
6. Step 6: Final answer
   x = 847.42