Finding the Fourth Proportional to 2,071.05, 3,107.34 and 961.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.05 : 3,107.34 = 961.01 : x
2. Step 2: Convert to fraction form
   2,071.05/3,107.34 = 961.01/x
3. Step 3: Cross multiply
   2,071.05x = 3,107.34 × 961.01
4. Step 4: Simplify right side
   2,071.05x = 2,986,169.28
5. Step 5: Solve for x
   x = 2,986,169.28/2,071.05
6. Step 6: Final answer
   x = 1,441.86