Finding the Fourth Proportional to 1,436.72, 1,982.84 and 807.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.72 : 1,982.84 = 807.27 : x
2. Step 2: Convert to fraction form
   1,436.72/1,982.84 = 807.27/x
3. Step 3: Cross multiply
   1,436.72x = 1,982.84 × 807.27
4. Step 4: Simplify right side
   1,436.72x = 1,600,683.21
5. Step 5: Solve for x
   x = 1,600,683.21/1,436.72
6. Step 6: Final answer
   x = 1,114.13