Finding the Fourth Proportional to 3,578.57, 4,938.53 and 2,162.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578.57 : 4,938.53 = 2,162.71 : x
2. Step 2: Convert to fraction form
   3,578.57/4,938.53 = 2,162.71/x
3. Step 3: Cross multiply
   3,578.57x = 4,938.53 × 2,162.71
4. Step 4: Simplify right side
   3,578.57x = 10,680,608.22
5. Step 5: Solve for x
   x = 10,680,608.22/3,578.57
6. Step 6: Final answer
   x = 2,984.60