Finding the Fourth Proportional to 1,105.80, 1,654.80 and 757.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.80 : 1,654.80 = 757.48 : x
2. Step 2: Convert to fraction form
   1,105.80/1,654.80 = 757.48/x
3. Step 3: Cross multiply
   1,105.80x = 1,654.80 × 757.48
4. Step 4: Simplify right side
   1,105.80x = 1,253,477.90
5. Step 5: Solve for x
   x = 1,253,477.90/1,105.80
6. Step 6: Final answer
   x = 1,133.55