Finding the Fourth Proportional to 3,854.96, 5,319.83 and 2,086.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,854.96 : 5,319.83 = 2,086.56 : x
2. Step 2: Convert to fraction form
   3,854.96/5,319.83 = 2,086.56/x
3. Step 3: Cross multiply
   3,854.96x = 5,319.83 × 2,086.56
4. Step 4: Simplify right side
   3,854.96x = 11,100,149.70
5. Step 5: Solve for x
   x = 11,100,149.70/3,854.96
6. Step 6: Final answer
   x = 2,879.45