Finding the Fourth Proportional to 2,111.59, 3,169.61 and 1,726.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.59 : 3,169.61 = 1,726.03 : x
2. Step 2: Convert to fraction form
   2,111.59/3,169.61 = 1,726.03/x
3. Step 3: Cross multiply
   2,111.59x = 3,169.61 × 1,726.03
4. Step 4: Simplify right side
   2,111.59x = 5,470,817.47
5. Step 5: Solve for x
   x = 5,470,817.47/2,111.59
6. Step 6: Final answer
   x = 2,590.86