Finding the Fourth Proportional to 1,340.34, 1,849.37 and 809.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.34 : 1,849.37 = 809.31 : x
2. Step 2: Convert to fraction form
   1,340.34/1,849.37 = 809.31/x
3. Step 3: Cross multiply
   1,340.34x = 1,849.37 × 809.31
4. Step 4: Simplify right side
   1,340.34x = 1,496,713.63
5. Step 5: Solve for x
   x = 1,496,713.63/1,340.34
6. Step 6: Final answer
   x = 1,116.67