Finding the Fourth Proportional to 2,550.62, 3,519.57 and 1,431.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.62 : 3,519.57 = 1,431.33 : x
2. Step 2: Convert to fraction form
   2,550.62/3,519.57 = 1,431.33/x
3. Step 3: Cross multiply
   2,550.62x = 3,519.57 × 1,431.33
4. Step 4: Simplify right side
   2,550.62x = 5,037,648.53
5. Step 5: Solve for x
   x = 5,037,648.53/2,550.62
6. Step 6: Final answer
   x = 1,975.07