Finding the Fourth Proportional to 2,550.15, 3,519.12 and 1,431.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.15 : 3,519.12 = 1,431.27 : x
2. Step 2: Convert to fraction form
   2,550.15/3,519.12 = 1,431.27/x
3. Step 3: Cross multiply
   2,550.15x = 3,519.12 × 1,431.27
4. Step 4: Simplify right side
   2,550.15x = 5,036,810.88
5. Step 5: Solve for x
   x = 5,036,810.88/2,550.15
6. Step 6: Final answer
   x = 1,975.10