Finding the Fourth Proportional to 2,114.22, 3,171.24 and 653.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.22 : 3,171.24 = 653.31 : x
2. Step 2: Convert to fraction form
   2,114.22/3,171.24 = 653.31/x
3. Step 3: Cross multiply
   2,114.22x = 3,171.24 × 653.31
4. Step 4: Simplify right side
   2,114.22x = 2,071,802.80
5. Step 5: Solve for x
   x = 2,071,802.80/2,114.22
6. Step 6: Final answer
   x = 979.94