Finding the Fourth Proportional to 2,650.38, 3,976.24 and 1,871.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.38 : 3,976.24 = 1,871.90 : x
2. Step 2: Convert to fraction form
   2,650.38/3,976.24 = 1,871.90/x
3. Step 3: Cross multiply
   2,650.38x = 3,976.24 × 1,871.90
4. Step 4: Simplify right side
   2,650.38x = 7,443,123.66
5. Step 5: Solve for x
   x = 7,443,123.66/2,650.38
6. Step 6: Final answer
   x = 2,808.32