Finding the Fourth Proportional to 3,072.89, 4,608.72 and 1,124.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,072.89 : 4,608.72 = 1,124.43 : x
2. Step 2: Convert to fraction form
   3,072.89/4,608.72 = 1,124.43/x
3. Step 3: Cross multiply
   3,072.89x = 4,608.72 × 1,124.43
4. Step 4: Simplify right side
   3,072.89x = 5,182,183.03
5. Step 5: Solve for x
   x = 5,182,183.03/3,072.89
6. Step 6: Final answer
   x = 1,686.42