Finding the Fourth Proportional to 2,257.48, 3,115.33 and 1,262.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257.48 : 3,115.33 = 1,262.77 : x
2. Step 2: Convert to fraction form
   2,257.48/3,115.33 = 1,262.77/x
3. Step 3: Cross multiply
   2,257.48x = 3,115.33 × 1,262.77
4. Step 4: Simplify right side
   2,257.48x = 3,933,934.32
5. Step 5: Solve for x
   x = 3,933,934.32/2,257.48
6. Step 6: Final answer
   x = 1,742.62