Finding the Fourth Proportional to 2,107.27, 3,161.58 and 1,011.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.27 : 3,161.58 = 1,011.71 : x
2. Step 2: Convert to fraction form
   2,107.27/3,161.58 = 1,011.71/x
3. Step 3: Cross multiply
   2,107.27x = 3,161.58 × 1,011.71
4. Step 4: Simplify right side
   2,107.27x = 3,198,602.10
5. Step 5: Solve for x
   x = 3,198,602.10/2,107.27
6. Step 6: Final answer
   x = 1,517.89