Finding the Fourth Proportional to 3,578.42, 5,366 and 1,112.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578.42 : 5,366 = 1,112.52 : x
2. Step 2: Convert to fraction form
   3,578.42/5,366 = 1,112.52/x
3. Step 3: Cross multiply
   3,578.42x = 5,366 × 1,112.52
4. Step 4: Simplify right side
   3,578.42x = 5,969,782.32
5. Step 5: Solve for x
   x = 5,969,782.32/3,578.42
6. Step 6: Final answer
   x = 1,668.27