Finding the Fourth Proportional to 2,016.11, 2,782.14 and 1,131.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.11 : 2,782.14 = 1,131.90 : x
2. Step 2: Convert to fraction form
   2,016.11/2,782.14 = 1,131.90/x
3. Step 3: Cross multiply
   2,016.11x = 2,782.14 × 1,131.90
4. Step 4: Simplify right side
   2,016.11x = 3,149,104.27
5. Step 5: Solve for x
   x = 3,149,104.27/2,016.11
6. Step 6: Final answer
   x = 1,561.97