Finding the Fourth Proportional to 2,259.82, 3,118.55 and 1,265.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.82 : 3,118.55 = 1,265.12 : x
2. Step 2: Convert to fraction form
   2,259.82/3,118.55 = 1,265.12/x
3. Step 3: Cross multiply
   2,259.82x = 3,118.55 × 1,265.12
4. Step 4: Simplify right side
   2,259.82x = 3,945,336.87
5. Step 5: Solve for x
   x = 3,945,336.87/2,259.82
6. Step 6: Final answer
   x = 1,745.86