Finding the Fourth Proportional to 2,550.33, 3,519.52 and 1,431.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.33 : 3,519.52 = 1,431.35 : x
2. Step 2: Convert to fraction form
   2,550.33/3,519.52 = 1,431.35/x
3. Step 3: Cross multiply
   2,550.33x = 3,519.52 × 1,431.35
4. Step 4: Simplify right side
   2,550.33x = 5,037,666.87
5. Step 5: Solve for x
   x = 5,037,666.87/2,550.33
6. Step 6: Final answer
   x = 1,975.30