Finding the Fourth Proportional to 2,773.83, 4,155.50 and 2,150.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,773.83 : 4,155.50 = 2,150.20 : x
2. Step 2: Convert to fraction form
   2,773.83/4,155.50 = 2,150.20/x
3. Step 3: Cross multiply
   2,773.83x = 4,155.50 × 2,150.20
4. Step 4: Simplify right side
   2,773.83x = 8,935,143.30
5. Step 5: Solve for x
   x = 8,935,143.30/2,773.83
6. Step 6: Final answer
   x = 3,221.23