Finding the Fourth Proportional to 3,989.52, 5,983.06 and 1,908.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,989.52 : 5,983.06 = 1,908.42 : x
2. Step 2: Convert to fraction form
   3,989.52/5,983.06 = 1,908.42/x
3. Step 3: Cross multiply
   3,989.52x = 5,983.06 × 1,908.42
4. Step 4: Simplify right side
   3,989.52x = 11,418,191.37
5. Step 5: Solve for x
   x = 11,418,191.37/3,989.52
6. Step 6: Final answer
   x = 2,862.05