Finding the Fourth Proportional to 2,550.56, 3,519.59 and 1,431.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.56 : 3,519.59 = 1,431.59 : x
2. Step 2: Convert to fraction form
   2,550.56/3,519.59 = 1,431.59/x
3. Step 3: Cross multiply
   2,550.56x = 3,519.59 × 1,431.59
4. Step 4: Simplify right side
   2,550.56x = 5,038,585.09
5. Step 5: Solve for x
   x = 5,038,585.09/2,550.56
6. Step 6: Final answer
   x = 1,975.49