Finding the Fourth Proportional to 2,550.43, 3,519.56 and 1,431.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.43 : 3,519.56 = 1,431.47 : x
2. Step 2: Convert to fraction form
   2,550.43/3,519.56 = 1,431.47/x
3. Step 3: Cross multiply
   2,550.43x = 3,519.56 × 1,431.47
4. Step 4: Simplify right side
   2,550.43x = 5,038,137.40
5. Step 5: Solve for x
   x = 5,038,137.40/2,550.43
6. Step 6: Final answer
   x = 1,975.41