Finding the Fourth Proportional to 3,857.88, 5,788.59 and 2,100.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857.88 : 5,788.59 = 2,100.27 : x
2. Step 2: Convert to fraction form
   3,857.88/5,788.59 = 2,100.27/x
3. Step 3: Cross multiply
   3,857.88x = 5,788.59 × 2,100.27
4. Step 4: Simplify right side
   3,857.88x = 12,157,601.92
5. Step 5: Solve for x
   x = 12,157,601.92/3,857.88
6. Step 6: Final answer
   x = 3,151.37