Finding the Fourth Proportional to 2,259.17, 3,117.57 and 1,264.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.17 : 3,117.57 = 1,264.42 : x
2. Step 2: Convert to fraction form
   2,259.17/3,117.57 = 1,264.42/x
3. Step 3: Cross multiply
   2,259.17x = 3,117.57 × 1,264.42
4. Step 4: Simplify right side
   2,259.17x = 3,941,902.27
5. Step 5: Solve for x
   x = 3,941,902.27/2,259.17
6. Step 6: Final answer
   x = 1,744.85