Finding the Fourth Proportional to 1,443.98, 2,165.85 and 519.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.98 : 2,165.85 = 519.37 : x
2. Step 2: Convert to fraction form
   1,443.98/2,165.85 = 519.37/x
3. Step 3: Cross multiply
   1,443.98x = 2,165.85 × 519.37
4. Step 4: Simplify right side
   1,443.98x = 1,124,866.69
5. Step 5: Solve for x
   x = 1,124,866.69/1,443.98
6. Step 6: Final answer
   x = 779.00