Finding the Fourth Proportional to 1,340.59, 1,849.71 and 809.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.59 : 1,849.71 = 809.56 : x
2. Step 2: Convert to fraction form
   1,340.59/1,849.71 = 809.56/x
3. Step 3: Cross multiply
   1,340.59x = 1,849.71 × 809.56
4. Step 4: Simplify right side
   1,340.59x = 1,497,451.23
5. Step 5: Solve for x
   x = 1,497,451.23/1,340.59
6. Step 6: Final answer
   x = 1,117.01