Finding the Fourth Proportional to 1,336.91, 1,844.34 and 805.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.91 : 1,844.34 = 805.65 : x
2. Step 2: Convert to fraction form
   1,336.91/1,844.34 = 805.65/x
3. Step 3: Cross multiply
   1,336.91x = 1,844.34 × 805.65
4. Step 4: Simplify right side
   1,336.91x = 1,485,892.52
5. Step 5: Solve for x
   x = 1,485,892.52/1,336.91
6. Step 6: Final answer
   x = 1,111.44