Finding the Fourth Proportional to 929.56, 1,392.72 and 884.20

Step by Step Solution

1. Step 1: Write the proportion equation
   929.56 : 1,392.72 = 884.20 : x
2. Step 2: Convert to fraction form
   929.56/1,392.72 = 884.20/x
3. Step 3: Cross multiply
   929.56x = 1,392.72 × 884.20
4. Step 4: Simplify right side
   929.56x = 1,231,443.02
5. Step 5: Solve for x
   x = 1,231,443.02/929.56
6. Step 6: Final answer
   x = 1,324.76