Finding the Fourth Proportional to 2,789.52, 3,851.12 and 1,939.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.52 : 3,851.12 = 1,939.96 : x
2. Step 2: Convert to fraction form
   2,789.52/3,851.12 = 1,939.96/x
3. Step 3: Cross multiply
   2,789.52x = 3,851.12 × 1,939.96
4. Step 4: Simplify right side
   2,789.52x = 7,471,018.76
5. Step 5: Solve for x
   x = 7,471,018.76/2,789.52
6. Step 6: Final answer
   x = 2,678.25