Finding the Fourth Proportional to 2,078.92, 2,868.24 and 1,380.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.92 : 2,868.24 = 1,380.43 : x
2. Step 2: Convert to fraction form
   2,078.92/2,868.24 = 1,380.43/x
3. Step 3: Cross multiply
   2,078.92x = 2,868.24 × 1,380.43
4. Step 4: Simplify right side
   2,078.92x = 3,959,404.54
5. Step 5: Solve for x
   x = 3,959,404.54/2,078.92
6. Step 6: Final answer
   x = 1,904.55