Finding the Fourth Proportional to 2,259.40, 3,117.72 and 1,264.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.40 : 3,117.72 = 1,264.54 : x
2. Step 2: Convert to fraction form
   2,259.40/3,117.72 = 1,264.54/x
3. Step 3: Cross multiply
   2,259.40x = 3,117.72 × 1,264.54
4. Step 4: Simplify right side
   2,259.40x = 3,942,481.65
5. Step 5: Solve for x
   x = 3,942,481.65/2,259.40
6. Step 6: Final answer
   x = 1,744.92