Finding the Fourth Proportional to 2,058.85, 3,086.06 and 889.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.85 : 3,086.06 = 889.40 : x
2. Step 2: Convert to fraction form
   2,058.85/3,086.06 = 889.40/x
3. Step 3: Cross multiply
   2,058.85x = 3,086.06 × 889.40
4. Step 4: Simplify right side
   2,058.85x = 2,744,733.46
5. Step 5: Solve for x
   x = 2,744,733.46/2,058.85
6. Step 6: Final answer
   x = 1,333.14