Finding the Fourth Proportional to 2,775.52, 4,164.24 and 927.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,775.52 : 4,164.24 = 927.20 : x
2. Step 2: Convert to fraction form
   2,775.52/4,164.24 = 927.20/x
3. Step 3: Cross multiply
   2,775.52x = 4,164.24 × 927.20
4. Step 4: Simplify right side
   2,775.52x = 3,861,083.33
5. Step 5: Solve for x
   x = 3,861,083.33/2,775.52
6. Step 6: Final answer
   x = 1,391.12