Finding the Fourth Proportional to 3,800.72, 5,697.34 and 1,721.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,800.72 : 5,697.34 = 1,721.25 : x
2. Step 2: Convert to fraction form
   3,800.72/5,697.34 = 1,721.25/x
3. Step 3: Cross multiply
   3,800.72x = 5,697.34 × 1,721.25
4. Step 4: Simplify right side
   3,800.72x = 9,806,542.17
5. Step 5: Solve for x
   x = 9,806,542.17/3,800.72
6. Step 6: Final answer
   x = 2,580.18