Finding the Fourth Proportional to 2,111.40, 3,167.19 and 650.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.40 : 3,167.19 = 650.57 : x
2. Step 2: Convert to fraction form
   2,111.40/3,167.19 = 650.57/x
3. Step 3: Cross multiply
   2,111.40x = 3,167.19 × 650.57
4. Step 4: Simplify right side
   2,111.40x = 2,060,462.96
5. Step 5: Solve for x
   x = 2,060,462.96/2,111.40
6. Step 6: Final answer
   x = 975.88