Finding the Fourth Proportional to 3,200.82, 4,799.49 and 2,160.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,200.82 : 4,799.49 = 2,160.78 : x
2. Step 2: Convert to fraction form
   3,200.82/4,799.49 = 2,160.78/x
3. Step 3: Cross multiply
   3,200.82x = 4,799.49 × 2,160.78
4. Step 4: Simplify right side
   3,200.82x = 10,370,642.00
5. Step 5: Solve for x
   x = 10,370,642.00/3,200.82
6. Step 6: Final answer
   x = 3,240.00