Finding the Fourth Proportional to 2,015.22, 2,781.22 and 1,131.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.22 : 2,781.22 = 1,131.03 : x
2. Step 2: Convert to fraction form
   2,015.22/2,781.22 = 1,131.03/x
3. Step 3: Cross multiply
   2,015.22x = 2,781.22 × 1,131.03
4. Step 4: Simplify right side
   2,015.22x = 3,145,640.43
5. Step 5: Solve for x
   x = 3,145,640.43/2,015.22
6. Step 6: Final answer
   x = 1,560.94