Finding the Fourth Proportional to 2,335.98, 3,222.27 and 1,640.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.98 : 3,222.27 = 1,640.46 : x
2. Step 2: Convert to fraction form
   2,335.98/3,222.27 = 1,640.46/x
3. Step 3: Cross multiply
   2,335.98x = 3,222.27 × 1,640.46
4. Step 4: Simplify right side
   2,335.98x = 5,286,005.04
5. Step 5: Solve for x
   x = 5,286,005.04/2,335.98
6. Step 6: Final answer
   x = 2,262.86