Finding the Fourth Proportional to 2,068.11, 3,100.68 and 680.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.11 : 3,100.68 = 680.67 : x
2. Step 2: Convert to fraction form
   2,068.11/3,100.68 = 680.67/x
3. Step 3: Cross multiply
   2,068.11x = 3,100.68 × 680.67
4. Step 4: Simplify right side
   2,068.11x = 2,110,539.86
5. Step 5: Solve for x
   x = 2,110,539.86/2,068.11
6. Step 6: Final answer
   x = 1,020.52