Finding the Fourth Proportional to 2,912.20, 4,367.04 and 1,062.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,912.20 : 4,367.04 = 1,062.72 : x
2. Step 2: Convert to fraction form
   2,912.20/4,367.04 = 1,062.72/x
3. Step 3: Cross multiply
   2,912.20x = 4,367.04 × 1,062.72
4. Step 4: Simplify right side
   2,912.20x = 4,640,940.75
5. Step 5: Solve for x
   x = 4,640,940.75/2,912.20
6. Step 6: Final answer
   x = 1,593.62