Finding the Fourth Proportional to 3,818.35, 5,269.35 and 2,139.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,818.35 : 5,269.35 = 2,139.83 : x
2. Step 2: Convert to fraction form
   3,818.35/5,269.35 = 2,139.83/x
3. Step 3: Cross multiply
   3,818.35x = 5,269.35 × 2,139.83
4. Step 4: Simplify right side
   3,818.35x = 11,275,513.21
5. Step 5: Solve for x
   x = 11,275,513.21/3,818.35
6. Step 6: Final answer
   x = 2,952.98