Finding the Fourth Proportional to 1,726.39, 2,382.73 and 1,620.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.39 : 2,382.73 = 1,620.89 : x
2. Step 2: Convert to fraction form
   1,726.39/2,382.73 = 1,620.89/x
3. Step 3: Cross multiply
   1,726.39x = 2,382.73 × 1,620.89
4. Step 4: Simplify right side
   1,726.39x = 3,862,131.32
5. Step 5: Solve for x
   x = 3,862,131.32/1,726.39
6. Step 6: Final answer
   x = 2,237.12