Finding the Fourth Proportional to 2,141.01, 3,211.98 and 680.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.01 : 3,211.98 = 680.28 : x
2. Step 2: Convert to fraction form
   2,141.01/3,211.98 = 680.28/x
3. Step 3: Cross multiply
   2,141.01x = 3,211.98 × 680.28
4. Step 4: Simplify right side
   2,141.01x = 2,185,045.75
5. Step 5: Solve for x
   x = 2,185,045.75/2,141.01
6. Step 6: Final answer
   x = 1,020.57