Finding the Fourth Proportional to 1,150.57, 1,726.17 and 457.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.57 : 1,726.17 = 457.33 : x
2. Step 2: Convert to fraction form
   1,150.57/1,726.17 = 457.33/x
3. Step 3: Cross multiply
   1,150.57x = 1,726.17 × 457.33
4. Step 4: Simplify right side
   1,150.57x = 789,429.33
5. Step 5: Solve for x
   x = 789,429.33/1,150.57
6. Step 6: Final answer
   x = 686.12