Finding the Fourth Proportional to 2,868.30, 3,953.46 and 1,982.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.30 : 3,953.46 = 1,982.16 : x
2. Step 2: Convert to fraction form
   2,868.30/3,953.46 = 1,982.16/x
3. Step 3: Cross multiply
   2,868.30x = 3,953.46 × 1,982.16
4. Step 4: Simplify right side
   2,868.30x = 7,836,390.27
5. Step 5: Solve for x
   x = 7,836,390.27/2,868.30
6. Step 6: Final answer
   x = 2,732.07