Finding the Fourth Proportional to 3,185.98, 4,782.48 and 2,257.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,185.98 : 4,782.48 = 2,257.72 : x
2. Step 2: Convert to fraction form
   3,185.98/4,782.48 = 2,257.72/x
3. Step 3: Cross multiply
   3,185.98x = 4,782.48 × 2,257.72
4. Step 4: Simplify right side
   3,185.98x = 10,797,500.75
5. Step 5: Solve for x
   x = 10,797,500.75/3,185.98
6. Step 6: Final answer
   x = 3,389.07