Finding the Fourth Proportional to 2,258.91, 3,117.33 and 1,264.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.91 : 3,117.33 = 1,264.18 : x
2. Step 2: Convert to fraction form
   2,258.91/3,117.33 = 1,264.18/x
3. Step 3: Cross multiply
   2,258.91x = 3,117.33 × 1,264.18
4. Step 4: Simplify right side
   2,258.91x = 3,940,866.24
5. Step 5: Solve for x
   x = 3,940,866.24/2,258.91
6. Step 6: Final answer
   x = 1,744.59