Finding the Fourth Proportional to 1,436.31, 1,982.19 and 806.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.31 : 1,982.19 = 806.82 : x
2. Step 2: Convert to fraction form
   1,436.31/1,982.19 = 806.82/x
3. Step 3: Cross multiply
   1,436.31x = 1,982.19 × 806.82
4. Step 4: Simplify right side
   1,436.31x = 1,599,270.54
5. Step 5: Solve for x
   x = 1,599,270.54/1,436.31
6. Step 6: Final answer
   x = 1,113.46