Finding the Fourth Proportional to 3,857.93, 5,323.89 and 2,179.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857.93 : 5,323.89 = 2,179.23 : x
2. Step 2: Convert to fraction form
   3,857.93/5,323.89 = 2,179.23/x
3. Step 3: Cross multiply
   3,857.93x = 5,323.89 × 2,179.23
4. Step 4: Simplify right side
   3,857.93x = 11,601,980.80
5. Step 5: Solve for x
   x = 11,601,980.80/3,857.93
6. Step 6: Final answer
   x = 3,007.31