Finding the Fourth Proportional to 3,765.20, 5,195.83 and 2,086.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,765.20 : 5,195.83 = 2,086.56 : x
2. Step 2: Convert to fraction form
   3,765.20/5,195.83 = 2,086.56/x
3. Step 3: Cross multiply
   3,765.20x = 5,195.83 × 2,086.56
4. Step 4: Simplify right side
   3,765.20x = 10,841,392.17
5. Step 5: Solve for x
   x = 10,841,392.17/3,765.20
6. Step 6: Final answer
   x = 2,879.37