Finding the Fourth Proportional to 3,819.15, 5,729.31 and 1,871.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,819.15 : 5,729.31 = 1,871.46 : x
2. Step 2: Convert to fraction form
   3,819.15/5,729.31 = 1,871.46/x
3. Step 3: Cross multiply
   3,819.15x = 5,729.31 × 1,871.46
4. Step 4: Simplify right side
   3,819.15x = 10,722,174.49
5. Step 5: Solve for x
   x = 10,722,174.49/3,819.15
6. Step 6: Final answer
   x = 2,807.48