Finding the Fourth Proportional to 3,679.61, 5,077.98 and 2,086.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.61 : 5,077.98 = 2,086.25 : x
2. Step 2: Convert to fraction form
   3,679.61/5,077.98 = 2,086.25/x
3. Step 3: Cross multiply
   3,679.61x = 5,077.98 × 2,086.25
4. Step 4: Simplify right side
   3,679.61x = 10,593,910.39
5. Step 5: Solve for x
   x = 10,593,910.39/3,679.61
6. Step 6: Final answer
   x = 2,879.09