Finding the Fourth Proportional to 2,772.56, 3,801.20 and 2,722.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.56 : 3,801.20 = 2,722.65 : x
2. Step 2: Convert to fraction form
   2,772.56/3,801.20 = 2,722.65/x
3. Step 3: Cross multiply
   2,772.56x = 3,801.20 × 2,722.65
4. Step 4: Simplify right side
   2,772.56x = 10,349,309.31
5. Step 5: Solve for x
   x = 10,349,309.31/2,772.56
6. Step 6: Final answer
   x = 3,732.76