Finding the Fourth Proportional to 3,838.18, 5,760.34 and 1,989.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,838.18 : 5,760.34 = 1,989.82 : x
2. Step 2: Convert to fraction form
   3,838.18/5,760.34 = 1,989.82/x
3. Step 3: Cross multiply
   3,838.18x = 5,760.34 × 1,989.82
4. Step 4: Simplify right side
   3,838.18x = 11,462,039.74
5. Step 5: Solve for x
   x = 11,462,039.74/3,838.18
6. Step 6: Final answer
   x = 2,986.32