Finding the Fourth Proportional to 1,002.84, 1,383.88 and 560.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.84 : 1,383.88 = 560.73 : x
2. Step 2: Convert to fraction form
   1,002.84/1,383.88 = 560.73/x
3. Step 3: Cross multiply
   1,002.84x = 1,383.88 × 560.73
4. Step 4: Simplify right side
   1,002.84x = 775,983.03
5. Step 5: Solve for x
   x = 775,983.03/1,002.84
6. Step 6: Final answer
   x = 773.79