Finding the Fourth Proportional to 1,436.19, 1,981.83 and 806.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.19 : 1,981.83 = 806.75 : x
2. Step 2: Convert to fraction form
   1,436.19/1,981.83 = 806.75/x
3. Step 3: Cross multiply
   1,436.19x = 1,981.83 × 806.75
4. Step 4: Simplify right side
   1,436.19x = 1,598,841.35
5. Step 5: Solve for x
   x = 1,598,841.35/1,436.19
6. Step 6: Final answer
   x = 1,113.25