Finding the Fourth Proportional to 3,111.26, 4,292.82 and 2,272.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.26 : 4,292.82 = 2,272.41 : x
2. Step 2: Convert to fraction form
   3,111.26/4,292.82 = 2,272.41/x
3. Step 3: Cross multiply
   3,111.26x = 4,292.82 × 2,272.41
4. Step 4: Simplify right side
   3,111.26x = 9,755,047.10
5. Step 5: Solve for x
   x = 9,755,047.10/3,111.26
6. Step 6: Final answer
   x = 3,135.41