Finding the Fourth Proportional to 2,660.43, 3,984.15 and 2,582.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660.43 : 3,984.15 = 2,582.67 : x
2. Step 2: Convert to fraction form
   2,660.43/3,984.15 = 2,582.67/x
3. Step 3: Cross multiply
   2,660.43x = 3,984.15 × 2,582.67
4. Step 4: Simplify right side
   2,660.43x = 10,289,744.68
5. Step 5: Solve for x
   x = 10,289,744.68/2,660.43
6. Step 6: Final answer
   x = 3,867.70