Finding the Fourth Proportional to 2,015.82, 2,781.83 and 1,131.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.82 : 2,781.83 = 1,131.62 : x
2. Step 2: Convert to fraction form
   2,015.82/2,781.83 = 1,131.62/x
3. Step 3: Cross multiply
   2,015.82x = 2,781.83 × 1,131.62
4. Step 4: Simplify right side
   2,015.82x = 3,147,974.46
5. Step 5: Solve for x
   x = 3,147,974.46/2,015.82
6. Step 6: Final answer
   x = 1,561.63