Finding the Fourth Proportional to 2,259.60, 3,118.15 and 1,264.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.60 : 3,118.15 = 1,264.69 : x
2. Step 2: Convert to fraction form
   2,259.60/3,118.15 = 1,264.69/x
3. Step 3: Cross multiply
   2,259.60x = 3,118.15 × 1,264.69
4. Step 4: Simplify right side
   2,259.60x = 3,943,493.12
5. Step 5: Solve for x
   x = 3,943,493.12/2,259.60
6. Step 6: Final answer
   x = 1,745.22