Finding the Fourth Proportional to 3,522.46, 5,284.56 and 1,057.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,522.46 : 5,284.56 = 1,057.32 : x
2. Step 2: Convert to fraction form
   3,522.46/5,284.56 = 1,057.32/x
3. Step 3: Cross multiply
   3,522.46x = 5,284.56 × 1,057.32
4. Step 4: Simplify right side
   3,522.46x = 5,587,470.98
5. Step 5: Solve for x
   x = 5,587,470.98/3,522.46
6. Step 6: Final answer
   x = 1,586.24