Finding the Fourth Proportional to 1,436.03, 1,981.49 and 806.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.03 : 1,981.49 = 806.55 : x
2. Step 2: Convert to fraction form
   1,436.03/1,981.49 = 806.55/x
3. Step 3: Cross multiply
   1,436.03x = 1,981.49 × 806.55
4. Step 4: Simplify right side
   1,436.03x = 1,598,170.76
5. Step 5: Solve for x
   x = 1,598,170.76/1,436.03
6. Step 6: Final answer
   x = 1,112.91