Finding the Fourth Proportional to 2,111.91, 3,167.91 and 651.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.91 : 3,167.91 = 651.17 : x
2. Step 2: Convert to fraction form
   2,111.91/3,167.91 = 651.17/x
3. Step 3: Cross multiply
   2,111.91x = 3,167.91 × 651.17
4. Step 4: Simplify right side
   2,111.91x = 2,062,855.87
5. Step 5: Solve for x
   x = 2,062,855.87/2,111.91
6. Step 6: Final answer
   x = 976.77