Finding the Fourth Proportional to 2,259.38, 3,117.78 and 1,264.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.38 : 3,117.78 = 1,264.43 : x
2. Step 2: Convert to fraction form
   2,259.38/3,117.78 = 1,264.43/x
3. Step 3: Cross multiply
   2,259.38x = 3,117.78 × 1,264.43
4. Step 4: Simplify right side
   2,259.38x = 3,942,214.57
5. Step 5: Solve for x
   x = 3,942,214.57/2,259.38
6. Step 6: Final answer
   x = 1,744.82