Finding the Fourth Proportional to 2,062.78, 2,846.67 and 1,131.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,062.78 : 2,846.67 = 1,131.28 : x
2. Step 2: Convert to fraction form
   2,062.78/2,846.67 = 1,131.28/x
3. Step 3: Cross multiply
   2,062.78x = 2,846.67 × 1,131.28
4. Step 4: Simplify right side
   2,062.78x = 3,220,380.84
5. Step 5: Solve for x
   x = 3,220,380.84/2,062.78
6. Step 6: Final answer
   x = 1,561.18