Finding the Fourth Proportional to 2,111.62, 3,167.16 and 650.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.62 : 3,167.16 = 650.65 : x
2. Step 2: Convert to fraction form
   2,111.62/3,167.16 = 650.65/x
3. Step 3: Cross multiply
   2,111.62x = 3,167.16 × 650.65
4. Step 4: Simplify right side
   2,111.62x = 2,060,712.65
5. Step 5: Solve for x
   x = 2,060,712.65/2,111.62
6. Step 6: Final answer
   x = 975.89