Finding the Fourth Proportional to 1,002.84, 1,501.56 and 806.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.84 : 1,501.56 = 806.88 : x
2. Step 2: Convert to fraction form
   1,002.84/1,501.56 = 806.88/x
3. Step 3: Cross multiply
   1,002.84x = 1,501.56 × 806.88
4. Step 4: Simplify right side
   1,002.84x = 1,211,578.73
5. Step 5: Solve for x
   x = 1,211,578.73/1,002.84
6. Step 6: Final answer
   x = 1,208.15