Finding the Fourth Proportional to 2,258.79, 3,117.24 and 1,264.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.79 : 3,117.24 = 1,264.02 : x
2. Step 2: Convert to fraction form
   2,258.79/3,117.24 = 1,264.02/x
3. Step 3: Cross multiply
   2,258.79x = 3,117.24 × 1,264.02
4. Step 4: Simplify right side
   2,258.79x = 3,940,253.70
5. Step 5: Solve for x
   x = 3,940,253.70/2,258.79
6. Step 6: Final answer
   x = 1,744.41