Finding the Fourth Proportional to 2,287.52, 3,431.76 and 748.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.52 : 3,431.76 = 748.48 : x
2. Step 2: Convert to fraction form
   2,287.52/3,431.76 = 748.48/x
3. Step 3: Cross multiply
   2,287.52x = 3,431.76 × 748.48
4. Step 4: Simplify right side
   2,287.52x = 2,568,603.72
5. Step 5: Solve for x
   x = 2,568,603.72/2,287.52
6. Step 6: Final answer
   x = 1,122.88