Finding the Fourth Proportional to 1,155.49, 1,594.56 and 658.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.49 : 1,594.56 = 658.15 : x
2. Step 2: Convert to fraction form
   1,155.49/1,594.56 = 658.15/x
3. Step 3: Cross multiply
   1,155.49x = 1,594.56 × 658.15
4. Step 4: Simplify right side
   1,155.49x = 1,049,459.66
5. Step 5: Solve for x
   x = 1,049,459.66/1,155.49
6. Step 6: Final answer
   x = 908.24