Finding the Fourth Proportional to 3,680.13, 5,079.00 and 2,086.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.13 : 5,079.00 = 2,086.81 : x
2. Step 2: Convert to fraction form
   3,680.13/5,079.00 = 2,086.81/x
3. Step 3: Cross multiply
   3,680.13x = 5,079.00 × 2,086.81
4. Step 4: Simplify right side
   3,680.13x = 10,598,931.69
5. Step 5: Solve for x
   x = 10,598,931.69/3,680.13
6. Step 6: Final answer
   x = 2,880.04