Finding the Fourth Proportional to 3,200.69, 4,793.30 and 2,648.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,200.69 : 4,793.30 = 2,648.81 : x
2. Step 2: Convert to fraction form
   3,200.69/4,793.30 = 2,648.81/x
3. Step 3: Cross multiply
   3,200.69x = 4,793.30 × 2,648.81
4. Step 4: Simplify right side
   3,200.69x = 12,696,527.73
5. Step 5: Solve for x
   x = 12,696,527.73/3,200.69
6. Step 6: Final answer
   x = 3,966.81