Finding the Fourth Proportional to 1,158.01, 1,597.31 and 660.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.01 : 1,597.31 = 660.54 : x
2. Step 2: Convert to fraction form
   1,158.01/1,597.31 = 660.54/x
3. Step 3: Cross multiply
   1,158.01x = 1,597.31 × 660.54
4. Step 4: Simplify right side
   1,158.01x = 1,055,087.15
5. Step 5: Solve for x
   x = 1,055,087.15/1,158.01
6. Step 6: Final answer
   x = 911.12