Finding the Fourth Proportional to 3,857.39, 5,323.15 and 2,285.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857.39 : 5,323.15 = 2,285.51 : x
2. Step 2: Convert to fraction form
   3,857.39/5,323.15 = 2,285.51/x
3. Step 3: Cross multiply
   3,857.39x = 5,323.15 × 2,285.51
4. Step 4: Simplify right side
   3,857.39x = 12,166,112.56
5. Step 5: Solve for x
   x = 12,166,112.56/3,857.39
6. Step 6: Final answer
   x = 3,153.98