Finding the Fourth Proportional to 2,111.21, 3,167.11 and 650.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.21 : 3,167.11 = 650.48 : x
2. Step 2: Convert to fraction form
   2,111.21/3,167.11 = 650.48/x
3. Step 3: Cross multiply
   2,111.21x = 3,167.11 × 650.48
4. Step 4: Simplify right side
   2,111.21x = 2,060,141.71
5. Step 5: Solve for x
   x = 2,060,141.71/2,111.21
6. Step 6: Final answer
   x = 975.81