Finding the Fourth Proportional to 2,015.38, 2,781.14 and 1,131.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.38 : 2,781.14 = 1,131.17 : x
2. Step 2: Convert to fraction form
   2,015.38/2,781.14 = 1,131.17/x
3. Step 3: Cross multiply
   2,015.38x = 2,781.14 × 1,131.17
4. Step 4: Simplify right side
   2,015.38x = 3,145,922.57
5. Step 5: Solve for x
   x = 3,145,922.57/2,015.38
6. Step 6: Final answer
   x = 1,560.96