Finding the Fourth Proportional to 3,320.94, 4,982.54 and 2,086.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,320.94 : 4,982.54 = 2,086.91 : x
2. Step 2: Convert to fraction form
   3,320.94/4,982.54 = 2,086.91/x
3. Step 3: Cross multiply
   3,320.94x = 4,982.54 × 2,086.91
4. Step 4: Simplify right side
   3,320.94x = 10,398,092.86
5. Step 5: Solve for x
   x = 10,398,092.86/3,320.94
6. Step 6: Final answer
   x = 3,131.07