Finding the Fourth Proportional to 2,550.51, 3,519.73 and 1,666.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.51 : 3,519.73 = 1,666.31 : x
2. Step 2: Convert to fraction form
   2,550.51/3,519.73 = 1,666.31/x
3. Step 3: Cross multiply
   2,550.51x = 3,519.73 × 1,666.31
4. Step 4: Simplify right side
   2,550.51x = 5,864,965.93
5. Step 5: Solve for x
   x = 5,864,965.93/2,550.51
6. Step 6: Final answer
   x = 2,299.53