Finding the Fourth Proportional to 1,155.40, 1,594.46 and 658.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.40 : 1,594.46 = 658.10 : x
2. Step 2: Convert to fraction form
   1,155.40/1,594.46 = 658.10/x
3. Step 3: Cross multiply
   1,155.40x = 1,594.46 × 658.10
4. Step 4: Simplify right side
   1,155.40x = 1,049,319.76
5. Step 5: Solve for x
   x = 1,049,319.76/1,155.40
6. Step 6: Final answer
   x = 908.19