Finding the Fourth Proportional to 3,744.78, 5,615.43 and 2,185.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,744.78 : 5,615.43 = 2,185.23 : x
2. Step 2: Convert to fraction form
   3,744.78/5,615.43 = 2,185.23/x
3. Step 3: Cross multiply
   3,744.78x = 5,615.43 × 2,185.23
4. Step 4: Simplify right side
   3,744.78x = 12,270,987.38
5. Step 5: Solve for x
   x = 12,270,987.38/3,744.78
6. Step 6: Final answer
   x = 3,276.83