Finding the Fourth Proportional to 2,058.09, 3,087.69 and 961.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.09 : 3,087.69 = 961.89 : x
2. Step 2: Convert to fraction form
   2,058.09/3,087.69 = 961.89/x
3. Step 3: Cross multiply
   2,058.09x = 3,087.69 × 961.89
4. Step 4: Simplify right side
   2,058.09x = 2,970,018.13
5. Step 5: Solve for x
   x = 2,970,018.13/2,058.09
6. Step 6: Final answer
   x = 1,443.09