Finding the Fourth Proportional to 3,871.24, 5,342.30 and 2,102.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.24 : 5,342.30 = 2,102.83 : x
2. Step 2: Convert to fraction form
   3,871.24/5,342.30 = 2,102.83/x
3. Step 3: Cross multiply
   3,871.24x = 5,342.30 × 2,102.83
4. Step 4: Simplify right side
   3,871.24x = 11,233,932.72
5. Step 5: Solve for x
   x = 11,233,932.72/3,871.24
6. Step 6: Final answer
   x = 2,901.90