Finding the Fourth Proportional to 2,259.49, 3,118.06 and 1,264.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.49 : 3,118.06 = 1,264.78 : x
2. Step 2: Convert to fraction form
   2,259.49/3,118.06 = 1,264.78/x
3. Step 3: Cross multiply
   2,259.49x = 3,118.06 × 1,264.78
4. Step 4: Simplify right side
   2,259.49x = 3,943,659.93
5. Step 5: Solve for x
   x = 3,943,659.93/2,259.49
6. Step 6: Final answer
   x = 1,745.38