Finding the Fourth Proportional to 2,257.31, 3,114.86 and 1,262.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257.31 : 3,114.86 = 1,262.57 : x
2. Step 2: Convert to fraction form
   2,257.31/3,114.86 = 1,262.57/x
3. Step 3: Cross multiply
   2,257.31x = 3,114.86 × 1,262.57
4. Step 4: Simplify right side
   2,257.31x = 3,932,706.90
5. Step 5: Solve for x
   x = 3,932,706.90/2,257.31
6. Step 6: Final answer
   x = 1,742.21