Finding the Fourth Proportional to 1,002.06, 1,382.82 and 559.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.06 : 1,382.82 = 559.98 : x
2. Step 2: Convert to fraction form
   1,002.06/1,382.82 = 559.98/x
3. Step 3: Cross multiply
   1,002.06x = 1,382.82 × 559.98
4. Step 4: Simplify right side
   1,002.06x = 774,351.54
5. Step 5: Solve for x
   x = 774,351.54/1,002.06
6. Step 6: Final answer
   x = 772.76