Finding the Fourth Proportional to 1,280.48, 1,766.02 and 1,105.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280.48 : 1,766.02 = 1,105.52 : x
2. Step 2: Convert to fraction form
   1,280.48/1,766.02 = 1,105.52/x
3. Step 3: Cross multiply
   1,280.48x = 1,766.02 × 1,105.52
4. Step 4: Simplify right side
   1,280.48x = 1,952,370.43
5. Step 5: Solve for x
   x = 1,952,370.43/1,280.48
6. Step 6: Final answer
   x = 1,524.72