Finding the Fourth Proportional to 2,258.69, 3,117.12 and 1,264.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.69 : 3,117.12 = 1,264.02 : x
2. Step 2: Convert to fraction form
   2,258.69/3,117.12 = 1,264.02/x
3. Step 3: Cross multiply
   2,258.69x = 3,117.12 × 1,264.02
4. Step 4: Simplify right side
   2,258.69x = 3,940,102.02
5. Step 5: Solve for x
   x = 3,940,102.02/2,258.69
6. Step 6: Final answer
   x = 1,744.42