Finding the Fourth Proportional to 3,570.78, 5,351.31 and 2,269.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,570.78 : 5,351.31 = 2,269.92 : x
2. Step 2: Convert to fraction form
   3,570.78/5,351.31 = 2,269.92/x
3. Step 3: Cross multiply
   3,570.78x = 5,351.31 × 2,269.92
4. Step 4: Simplify right side
   3,570.78x = 12,147,034.25
5. Step 5: Solve for x
   x = 12,147,034.25/3,570.78
6. Step 6: Final answer
   x = 3,401.79