Finding the Fourth Proportional to 3,868.27, 5,337.86 and 2,189.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.27 : 5,337.86 = 2,189.83 : x
2. Step 2: Convert to fraction form
   3,868.27/5,337.86 = 2,189.83/x
3. Step 3: Cross multiply
   3,868.27x = 5,337.86 × 2,189.83
4. Step 4: Simplify right side
   3,868.27x = 11,689,005.96
5. Step 5: Solve for x
   x = 11,689,005.96/3,868.27
6. Step 6: Final answer
   x = 3,021.77