Finding the Fourth Proportional to 1,097.22, 1,644.50 and 805.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.22 : 1,644.50 = 805.96 : x
2. Step 2: Convert to fraction form
   1,097.22/1,644.50 = 805.96/x
3. Step 3: Cross multiply
   1,097.22x = 1,644.50 × 805.96
4. Step 4: Simplify right side
   1,097.22x = 1,325,388.97
5. Step 5: Solve for x
   x = 1,325,388.97/1,097.22
6. Step 6: Final answer
   x = 1,207.96