Finding the Fourth Proportional to 2,257.28, 3,114.77 and 1,262.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257.28 : 3,114.77 = 1,262.31 : x
2. Step 2: Convert to fraction form
   2,257.28/3,114.77 = 1,262.31/x
3. Step 3: Cross multiply
   2,257.28x = 3,114.77 × 1,262.31
4. Step 4: Simplify right side
   2,257.28x = 3,931,797.86
5. Step 5: Solve for x
   x = 3,931,797.86/2,257.28
6. Step 6: Final answer
   x = 1,741.83