Finding the Fourth Proportional to 1,105.88, 1,658.72 and 798.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.88 : 1,658.72 = 798.28 : x
2. Step 2: Convert to fraction form
   1,105.88/1,658.72 = 798.28/x
3. Step 3: Cross multiply
   1,105.88x = 1,658.72 × 798.28
4. Step 4: Simplify right side
   1,105.88x = 1,324,123.00
5. Step 5: Solve for x
   x = 1,324,123.00/1,105.88
6. Step 6: Final answer
   x = 1,197.35