Finding the Fourth Proportional to 1,726.98, 2,395.43 and 1,664.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.98 : 2,395.43 = 1,664.71 : x
2. Step 2: Convert to fraction form
   1,726.98/2,395.43 = 1,664.71/x
3. Step 3: Cross multiply
   1,726.98x = 2,395.43 × 1,664.71
4. Step 4: Simplify right side
   1,726.98x = 3,987,696.28
5. Step 5: Solve for x
   x = 3,987,696.28/1,726.98
6. Step 6: Final answer
   x = 2,309.06