Finding the Fourth Proportional to 2,114.25, 3,171.52 and 653.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.25 : 3,171.52 = 653.21 : x
2. Step 2: Convert to fraction form
   2,114.25/3,171.52 = 653.21/x
3. Step 3: Cross multiply
   2,114.25x = 3,171.52 × 653.21
4. Step 4: Simplify right side
   2,114.25x = 2,071,665.43
5. Step 5: Solve for x
   x = 2,071,665.43/2,114.25
6. Step 6: Final answer
   x = 979.86