Finding the Fourth Proportional to 2,250.39, 3,105.50 and 1,255.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,250.39 : 3,105.50 = 1,255.65 : x
2. Step 2: Convert to fraction form
   2,250.39/3,105.50 = 1,255.65/x
3. Step 3: Cross multiply
   2,250.39x = 3,105.50 × 1,255.65
4. Step 4: Simplify right side
   2,250.39x = 3,899,421.08
5. Step 5: Solve for x
   x = 3,899,421.08/2,250.39
6. Step 6: Final answer
   x = 1,732.78