Finding the Fourth Proportional to 3,379.88, 5,074.78 and 2,086.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,379.88 : 5,074.78 = 2,086.76 : x
2. Step 2: Convert to fraction form
   3,379.88/5,074.78 = 2,086.76/x
3. Step 3: Cross multiply
   3,379.88x = 5,074.78 × 2,086.76
4. Step 4: Simplify right side
   3,379.88x = 10,589,847.91
5. Step 5: Solve for x
   x = 10,589,847.91/3,379.88
6. Step 6: Final answer
   x = 3,133.20