Finding the Fourth Proportional to 1,101.33, 1,648.89 and 880.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.33 : 1,648.89 = 880.83 : x
2. Step 2: Convert to fraction form
   1,101.33/1,648.89 = 880.83/x
3. Step 3: Cross multiply
   1,101.33x = 1,648.89 × 880.83
4. Step 4: Simplify right side
   1,101.33x = 1,452,391.78
5. Step 5: Solve for x
   x = 1,452,391.78/1,101.33
6. Step 6: Final answer
   x = 1,318.76