Finding the Fourth Proportional to 1,721.39, 2,591.37 and 1,568.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721.39 : 2,591.37 = 1,568.30 : x
2. Step 2: Convert to fraction form
   1,721.39/2,591.37 = 1,568.30/x
3. Step 3: Cross multiply
   1,721.39x = 2,591.37 × 1,568.30
4. Step 4: Simplify right side
   1,721.39x = 4,064,032.61
5. Step 5: Solve for x
   x = 4,064,032.61/1,721.39
6. Step 6: Final answer
   x = 2,360.91