Finding the Fourth Proportional to 2,550.73, 3,519.81 and 1,431.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.73 : 3,519.81 = 1,431.45 : x
2. Step 2: Convert to fraction form
   2,550.73/3,519.81 = 1,431.45/x
3. Step 3: Cross multiply
   2,550.73x = 3,519.81 × 1,431.45
4. Step 4: Simplify right side
   2,550.73x = 5,038,443.68
5. Step 5: Solve for x
   x = 5,038,443.68/2,550.73
6. Step 6: Final answer
   x = 1,975.29