Finding the Fourth Proportional to 3,857.19, 5,789.42 and 2,103.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857.19 : 5,789.42 = 2,103.94 : x
2. Step 2: Convert to fraction form
   3,857.19/5,789.42 = 2,103.94/x
3. Step 3: Cross multiply
   3,857.19x = 5,789.42 × 2,103.94
4. Step 4: Simplify right side
   3,857.19x = 12,180,608.76
5. Step 5: Solve for x
   x = 12,180,608.76/3,857.19
6. Step 6: Final answer
   x = 3,157.90