Finding the Fourth Proportional to 2,111.75, 3,168.05 and 650.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.75 : 3,168.05 = 650.84 : x
2. Step 2: Convert to fraction form
   2,111.75/3,168.05 = 650.84/x
3. Step 3: Cross multiply
   2,111.75x = 3,168.05 × 650.84
4. Step 4: Simplify right side
   2,111.75x = 2,061,890.41
5. Step 5: Solve for x
   x = 2,061,890.41/2,111.75
6. Step 6: Final answer
   x = 976.39