Finding the Fourth Proportional to 3,839.52, 5,760.50 and 1,989.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,839.52 : 5,760.50 = 1,989.48 : x
2. Step 2: Convert to fraction form
   3,839.52/5,760.50 = 1,989.48/x
3. Step 3: Cross multiply
   3,839.52x = 5,760.50 × 1,989.48
4. Step 4: Simplify right side
   3,839.52x = 11,460,389.59
5. Step 5: Solve for x
   x = 11,460,389.59/3,839.52
6. Step 6: Final answer
   x = 2,984.85