Finding the Fourth Proportional to 1,436.51, 1,982.22 and 806.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.51 : 1,982.22 = 806.91 : x
2. Step 2: Convert to fraction form
   1,436.51/1,982.22 = 806.91/x
3. Step 3: Cross multiply
   1,436.51x = 1,982.22 × 806.91
4. Step 4: Simplify right side
   1,436.51x = 1,599,473.14
5. Step 5: Solve for x
   x = 1,599,473.14/1,436.51
6. Step 6: Final answer
   x = 1,113.45