Finding the Fourth Proportional to 2,258.47, 3,116.86 and 1,263.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.47 : 3,116.86 = 1,263.92 : x
2. Step 2: Convert to fraction form
   2,258.47/3,116.86 = 1,263.92/x
3. Step 3: Cross multiply
   2,258.47x = 3,116.86 × 1,263.92
4. Step 4: Simplify right side
   2,258.47x = 3,939,466.32
5. Step 5: Solve for x
   x = 3,939,466.32/2,258.47
6. Step 6: Final answer
   x = 1,744.31