Finding the Fourth Proportional to 2,111.53, 3,167.31 and 650.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.53 : 3,167.31 = 650.68 : x
2. Step 2: Convert to fraction form
   2,111.53/3,167.31 = 650.68/x
3. Step 3: Cross multiply
   2,111.53x = 3,167.31 × 650.68
4. Step 4: Simplify right side
   2,111.53x = 2,060,886.18
5. Step 5: Solve for x
   x = 2,060,886.18/2,111.53
6. Step 6: Final answer
   x = 976.02