Finding the Fourth Proportional to 3,764.91, 5,195.57 and 2,086.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,764.91 : 5,195.57 = 2,086.31 : x
2. Step 2: Convert to fraction form
   3,764.91/5,195.57 = 2,086.31/x
3. Step 3: Cross multiply
   3,764.91x = 5,195.57 × 2,086.31
4. Step 4: Simplify right side
   3,764.91x = 10,839,548.85
5. Step 5: Solve for x
   x = 10,839,548.85/3,764.91
6. Step 6: Final answer
   x = 2,879.10