Finding the Fourth Proportional to 2,857.98, 4,289.38 and 1,127.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,857.98 : 4,289.38 = 1,127.82 : x
2. Step 2: Convert to fraction form
   2,857.98/4,289.38 = 1,127.82/x
3. Step 3: Cross multiply
   2,857.98x = 4,289.38 × 1,127.82
4. Step 4: Simplify right side
   2,857.98x = 4,837,648.55
5. Step 5: Solve for x
   x = 4,837,648.55/2,857.98
6. Step 6: Final answer
   x = 1,692.68