Finding the Fourth Proportional to 1,629.72, 2,443.86 and 518.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,629.72 : 2,443.86 = 518.82 : x
2. Step 2: Convert to fraction form
   1,629.72/2,443.86 = 518.82/x
3. Step 3: Cross multiply
   1,629.72x = 2,443.86 × 518.82
4. Step 4: Simplify right side
   1,629.72x = 1,267,923.45
5. Step 5: Solve for x
   x = 1,267,923.45/1,629.72
6. Step 6: Final answer
   x = 778.00