Finding the Fourth Proportional to 2,336.31, 3,222.05 and 1,805.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,336.31 : 3,222.05 = 1,805.22 : x
2. Step 2: Convert to fraction form
   2,336.31/3,222.05 = 1,805.22/x
3. Step 3: Cross multiply
   2,336.31x = 3,222.05 × 1,805.22
4. Step 4: Simplify right side
   2,336.31x = 5,816,500.07
5. Step 5: Solve for x
   x = 5,816,500.07/2,336.31
6. Step 6: Final answer
   x = 2,489.61