Finding the Fourth Proportional to 2,114.14, 3,171.35 and 653.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.14 : 3,171.35 = 653.10 : x
2. Step 2: Convert to fraction form
   2,114.14/3,171.35 = 653.10/x
3. Step 3: Cross multiply
   2,114.14x = 3,171.35 × 653.10
4. Step 4: Simplify right side
   2,114.14x = 2,071,208.69
5. Step 5: Solve for x
   x = 2,071,208.69/2,114.14
6. Step 6: Final answer
   x = 979.69