Finding the Fourth Proportional to 1,436.73, 1,982.78 and 807.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.73 : 1,982.78 = 807.30 : x
2. Step 2: Convert to fraction form
   1,436.73/1,982.78 = 807.30/x
3. Step 3: Cross multiply
   1,436.73x = 1,982.78 × 807.30
4. Step 4: Simplify right side
   1,436.73x = 1,600,698.29
5. Step 5: Solve for x
   x = 1,600,698.29/1,436.73
6. Step 6: Final answer
   x = 1,114.13