Finding the Fourth Proportional to 2,504.38, 3,755.67 and 860.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.38 : 3,755.67 = 860.49 : x
2. Step 2: Convert to fraction form
   2,504.38/3,755.67 = 860.49/x
3. Step 3: Cross multiply
   2,504.38x = 3,755.67 × 860.49
4. Step 4: Simplify right side
   2,504.38x = 3,231,716.48
5. Step 5: Solve for x
   x = 3,231,716.48/2,504.38
6. Step 6: Final answer
   x = 1,290.43