Finding the Fourth Proportional to 1,158.23, 1,598.01 and 660.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.23 : 1,598.01 = 660.69 : x
2. Step 2: Convert to fraction form
   1,158.23/1,598.01 = 660.69/x
3. Step 3: Cross multiply
   1,158.23x = 1,598.01 × 660.69
4. Step 4: Simplify right side
   1,158.23x = 1,055,789.23
5. Step 5: Solve for x
   x = 1,055,789.23/1,158.23
6. Step 6: Final answer
   x = 911.55