Finding the Fourth Proportional to 2,015.52, 2,781.23 and 1,131.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.52 : 2,781.23 = 1,131.27 : x
2. Step 2: Convert to fraction form
   2,015.52/2,781.23 = 1,131.27/x
3. Step 3: Cross multiply
   2,015.52x = 2,781.23 × 1,131.27
4. Step 4: Simplify right side
   2,015.52x = 3,146,316.41
5. Step 5: Solve for x
   x = 3,146,316.41/2,015.52
6. Step 6: Final answer
   x = 1,561.04