Finding the Fourth Proportional to 2,058.21, 3,085.16 and 961.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.21 : 3,085.16 = 961.67 : x
2. Step 2: Convert to fraction form
   2,058.21/3,085.16 = 961.67/x
3. Step 3: Cross multiply
   2,058.21x = 3,085.16 × 961.67
4. Step 4: Simplify right side
   2,058.21x = 2,966,908.72
5. Step 5: Solve for x
   x = 2,966,908.72/2,058.21
6. Step 6: Final answer
   x = 1,441.50