Finding the Fourth Proportional to 1,012.96, 1,517.41 and 806.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.96 : 1,517.41 = 806.41 : x
2. Step 2: Convert to fraction form
   1,012.96/1,517.41 = 806.41/x
3. Step 3: Cross multiply
   1,012.96x = 1,517.41 × 806.41
4. Step 4: Simplify right side
   1,012.96x = 1,223,654.60
5. Step 5: Solve for x
   x = 1,223,654.60/1,012.96
6. Step 6: Final answer
   x = 1,208.00