Finding the Fourth Proportional to 1,436.02, 1,981.65 and 806.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.02 : 1,981.65 = 806.50 : x
2. Step 2: Convert to fraction form
   1,436.02/1,981.65 = 806.50/x
3. Step 3: Cross multiply
   1,436.02x = 1,981.65 × 806.50
4. Step 4: Simplify right side
   1,436.02x = 1,598,200.73
5. Step 5: Solve for x
   x = 1,598,200.73/1,436.02
6. Step 6: Final answer
   x = 1,112.94