Finding the Fourth Proportional to 1,340.61, 1,850.06 and 809.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.61 : 1,850.06 = 809.52 : x
2. Step 2: Convert to fraction form
   1,340.61/1,850.06 = 809.52/x
3. Step 3: Cross multiply
   1,340.61x = 1,850.06 × 809.52
4. Step 4: Simplify right side
   1,340.61x = 1,497,662.60
5. Step 5: Solve for x
   x = 1,497,662.60/1,340.61
6. Step 6: Final answer
   x = 1,117.15