Finding the Fourth Proportional to 3,983.76, 5,970.96 and 1,789.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983.76 : 5,970.96 = 1,789.92 : x
2. Step 2: Convert to fraction form
   3,983.76/5,970.96 = 1,789.92/x
3. Step 3: Cross multiply
   3,983.76x = 5,970.96 × 1,789.92
4. Step 4: Simplify right side
   3,983.76x = 10,687,540.72
5. Step 5: Solve for x
   x = 10,687,540.72/3,983.76
6. Step 6: Final answer
   x = 2,682.78