Finding the Fourth Proportional to 2,259.15, 3,117.62 and 1,264.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.15 : 3,117.62 = 1,264.49 : x
2. Step 2: Convert to fraction form
   2,259.15/3,117.62 = 1,264.49/x
3. Step 3: Cross multiply
   2,259.15x = 3,117.62 × 1,264.49
4. Step 4: Simplify right side
   2,259.15x = 3,942,199.31
5. Step 5: Solve for x
   x = 3,942,199.31/2,259.15
6. Step 6: Final answer
   x = 1,744.99