Finding the Fourth Proportional to 3,978.92, 5,971.49 and 2,754.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.92 : 5,971.49 = 2,754.91 : x
2. Step 2: Convert to fraction form
   3,978.92/5,971.49 = 2,754.91/x
3. Step 3: Cross multiply
   3,978.92x = 5,971.49 × 2,754.91
4. Step 4: Simplify right side
   3,978.92x = 16,450,921.54
5. Step 5: Solve for x
   x = 16,450,921.54/3,978.92
6. Step 6: Final answer
   x = 4,134.52