Finding the Fourth Proportional to 2,258.86, 3,117.10 and 1,264.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.86 : 3,117.10 = 1,264.16 : x
2. Step 2: Convert to fraction form
   2,258.86/3,117.10 = 1,264.16/x
3. Step 3: Cross multiply
   2,258.86x = 3,117.10 × 1,264.16
4. Step 4: Simplify right side
   2,258.86x = 3,940,513.14
5. Step 5: Solve for x
   x = 3,940,513.14/2,258.86
6. Step 6: Final answer
   x = 1,744.47