Finding the Fourth Proportional to 2,508.72, 3,460.98 and 1,721.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,508.72 : 3,460.98 = 1,721.40 : x
2. Step 2: Convert to fraction form
   2,508.72/3,460.98 = 1,721.40/x
3. Step 3: Cross multiply
   2,508.72x = 3,460.98 × 1,721.40
4. Step 4: Simplify right side
   2,508.72x = 5,957,730.97
5. Step 5: Solve for x
   x = 5,957,730.97/2,508.72
6. Step 6: Final answer
   x = 2,374.81