Finding the Fourth Proportional to 2,830.57, 3,906.15 and 1,571.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.57 : 3,906.15 = 1,571.62 : x
2. Step 2: Convert to fraction form
   2,830.57/3,906.15 = 1,571.62/x
3. Step 3: Cross multiply
   2,830.57x = 3,906.15 × 1,571.62
4. Step 4: Simplify right side
   2,830.57x = 6,138,983.46
5. Step 5: Solve for x
   x = 6,138,983.46/2,830.57
6. Step 6: Final answer
   x = 2,168.82