Finding the Fourth Proportional to 2,141.29, 3,212.37 and 680.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.29 : 3,212.37 = 680.53 : x
2. Step 2: Convert to fraction form
   2,141.29/3,212.37 = 680.53/x
3. Step 3: Cross multiply
   2,141.29x = 3,212.37 × 680.53
4. Step 4: Simplify right side
   2,141.29x = 2,186,114.16
5. Step 5: Solve for x
   x = 2,186,114.16/2,141.29
6. Step 6: Final answer
   x = 1,020.93