Finding the Fourth Proportional to 2,504.94, 3,757.47 and 861.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.94 : 3,757.47 = 861.57 : x
2. Step 2: Convert to fraction form
   2,504.94/3,757.47 = 861.57/x
3. Step 3: Cross multiply
   2,504.94x = 3,757.47 × 861.57
4. Step 4: Simplify right side
   2,504.94x = 3,237,323.43
5. Step 5: Solve for x
   x = 3,237,323.43/2,504.94
6. Step 6: Final answer
   x = 1,292.38