Finding the Fourth Proportional to 2,789.47, 3,848.43 and 2,231.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.47 : 3,848.43 = 2,231.23 : x
2. Step 2: Convert to fraction form
   2,789.47/3,848.43 = 2,231.23/x
3. Step 3: Cross multiply
   2,789.47x = 3,848.43 × 2,231.23
4. Step 4: Simplify right side
   2,789.47x = 8,586,732.47
5. Step 5: Solve for x
   x = 8,586,732.47/2,789.47
6. Step 6: Final answer
   x = 3,078.27