Finding the Fourth Proportional to 1,436.95, 1,982.86 and 807.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.95 : 1,982.86 = 807.43 : x
2. Step 2: Convert to fraction form
   1,436.95/1,982.86 = 807.43/x
3. Step 3: Cross multiply
   1,436.95x = 1,982.86 × 807.43
4. Step 4: Simplify right side
   1,436.95x = 1,601,016.36
5. Step 5: Solve for x
   x = 1,601,016.36/1,436.95
6. Step 6: Final answer
   x = 1,114.18