Finding the Fourth Proportional to 1,158.34, 1,598.52 and 660.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.34 : 1,598.52 = 660.96 : x
2. Step 2: Convert to fraction form
   1,158.34/1,598.52 = 660.96/x
3. Step 3: Cross multiply
   1,158.34x = 1,598.52 × 660.96
4. Step 4: Simplify right side
   1,158.34x = 1,056,557.78
5. Step 5: Solve for x
   x = 1,056,557.78/1,158.34
6. Step 6: Final answer
   x = 912.13