Finding the Fourth Proportional to 2,706.72, 3,728.88 and 2,231.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,706.72 : 3,728.88 = 2,231.52 : x
2. Step 2: Convert to fraction form
   2,706.72/3,728.88 = 2,231.52/x
3. Step 3: Cross multiply
   2,706.72x = 3,728.88 × 2,231.52
4. Step 4: Simplify right side
   2,706.72x = 8,321,070.30
5. Step 5: Solve for x
   x = 8,321,070.30/2,706.72
6. Step 6: Final answer
   x = 3,074.23