Finding the Fourth Proportional to 2,722.56, 3,777.72 and 2,612.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.56 : 3,777.72 = 2,612.88 : x
2. Step 2: Convert to fraction form
   2,722.56/3,777.72 = 2,612.88/x
3. Step 3: Cross multiply
   2,722.56x = 3,777.72 × 2,612.88
4. Step 4: Simplify right side
   2,722.56x = 9,870,729.03
5. Step 5: Solve for x
   x = 9,870,729.03/2,722.56
6. Step 6: Final answer
   x = 3,625.53