Finding the Fourth Proportional to 3,522.78, 5,282.43 and 1,331.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,522.78 : 5,282.43 = 1,331.69 : x
2. Step 2: Convert to fraction form
   3,522.78/5,282.43 = 1,331.69/x
3. Step 3: Cross multiply
   3,522.78x = 5,282.43 × 1,331.69
4. Step 4: Simplify right side
   3,522.78x = 7,034,532.79
5. Step 5: Solve for x
   x = 7,034,532.79/3,522.78
6. Step 6: Final answer
   x = 1,996.87