Finding the Fourth Proportional to 3,765.35, 5,196.30 and 2,086.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,765.35 : 5,196.30 = 2,086.61 : x
2. Step 2: Convert to fraction form
   3,765.35/5,196.30 = 2,086.61/x
3. Step 3: Cross multiply
   3,765.35x = 5,196.30 × 2,086.61
4. Step 4: Simplify right side
   3,765.35x = 10,842,625.56
5. Step 5: Solve for x
   x = 10,842,625.56/3,765.35
6. Step 6: Final answer
   x = 2,879.58