Finding the Fourth Proportional to 3,854.86, 5,319.74 and 2,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,854.86 : 5,319.74 = 2,086.50 : x
2. Step 2: Convert to fraction form
   3,854.86/5,319.74 = 2,086.50/x
3. Step 3: Cross multiply
   3,854.86x = 5,319.74 × 2,086.50
4. Step 4: Simplify right side
   3,854.86x = 11,099,642.73
5. Step 5: Solve for x
   x = 11,099,642.73/3,854.86
6. Step 6: Final answer
   x = 2,879.39