Finding the Fourth Proportional to 2,185.38, 3,275.34 and 1,721.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.38 : 3,275.34 = 1,721.33 : x
2. Step 2: Convert to fraction form
   2,185.38/3,275.34 = 1,721.33/x
3. Step 3: Cross multiply
   2,185.38x = 3,275.34 × 1,721.33
4. Step 4: Simplify right side
   2,185.38x = 5,637,932.40
5. Step 5: Solve for x
   x = 5,637,932.40/2,185.38
6. Step 6: Final answer
   x = 2,579.84