Finding the Fourth Proportional to 2,058.75, 3,082.78 and 1,728.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.75 : 3,082.78 = 1,728.93 : x
2. Step 2: Convert to fraction form
   2,058.75/3,082.78 = 1,728.93/x
3. Step 3: Cross multiply
   2,058.75x = 3,082.78 × 1,728.93
4. Step 4: Simplify right side
   2,058.75x = 5,329,910.83
5. Step 5: Solve for x
   x = 5,329,910.83/2,058.75
6. Step 6: Final answer
   x = 2,588.91