Finding the Fourth Proportional to 1,158.01, 1,598.10 and 660.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.01 : 1,598.10 = 660.73 : x
2. Step 2: Convert to fraction form
   1,158.01/1,598.10 = 660.73/x
3. Step 3: Cross multiply
   1,158.01x = 1,598.10 × 660.73
4. Step 4: Simplify right side
   1,158.01x = 1,055,906.14
5. Step 5: Solve for x
   x = 1,055,906.14/1,158.01
6. Step 6: Final answer
   x = 911.83