Finding the Fourth Proportional to 2,257.47, 3,115.59 and 1,262.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257.47 : 3,115.59 = 1,262.81 : x
2. Step 2: Convert to fraction form
   2,257.47/3,115.59 = 1,262.81/x
3. Step 3: Cross multiply
   2,257.47x = 3,115.59 × 1,262.81
4. Step 4: Simplify right side
   2,257.47x = 3,934,382.63
5. Step 5: Solve for x
   x = 3,934,382.63/2,257.47
6. Step 6: Final answer
   x = 1,742.83