Finding the Fourth Proportional to 2,059.81, 3,086.83 and 961.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.81 : 3,086.83 = 961.45 : x
2. Step 2: Convert to fraction form
   2,059.81/3,086.83 = 961.45/x
3. Step 3: Cross multiply
   2,059.81x = 3,086.83 × 961.45
4. Step 4: Simplify right side
   2,059.81x = 2,967,832.70
5. Step 5: Solve for x
   x = 2,967,832.70/2,059.81
6. Step 6: Final answer
   x = 1,440.83