Finding the Fourth Proportional to 2,078.92, 2,868.90 and 1,147.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.92 : 2,868.90 = 1,147.42 : x
2. Step 2: Convert to fraction form
   2,078.92/2,868.90 = 1,147.42/x
3. Step 3: Cross multiply
   2,078.92x = 2,868.90 × 1,147.42
4. Step 4: Simplify right side
   2,078.92x = 3,291,833.24
5. Step 5: Solve for x
   x = 3,291,833.24/2,078.92
6. Step 6: Final answer
   x = 1,583.43