Finding the Fourth Proportional to 2,112.44, 3,167.16 and 650.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.44 : 3,167.16 = 650.78 : x
2. Step 2: Convert to fraction form
   2,112.44/3,167.16 = 650.78/x
3. Step 3: Cross multiply
   2,112.44x = 3,167.16 × 650.78
4. Step 4: Simplify right side
   2,112.44x = 2,061,124.38
5. Step 5: Solve for x
   x = 2,061,124.38/2,112.44
6. Step 6: Final answer
   x = 975.71