Finding the Fourth Proportional to 3,578.94, 4,938.48 and 2,086.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578.94 : 4,938.48 = 2,086.52 : x
2. Step 2: Convert to fraction form
   3,578.94/4,938.48 = 2,086.52/x
3. Step 3: Cross multiply
   3,578.94x = 4,938.48 × 2,086.52
4. Step 4: Simplify right side
   3,578.94x = 10,304,212.60
5. Step 5: Solve for x
   x = 10,304,212.60/3,578.94
6. Step 6: Final answer
   x = 2,879.12