Finding the Fourth Proportional to 1,775.92, 2,665.18 and 680.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,775.92 : 2,665.18 = 680.62 : x
2. Step 2: Convert to fraction form
   1,775.92/2,665.18 = 680.62/x
3. Step 3: Cross multiply
   1,775.92x = 2,665.18 × 680.62
4. Step 4: Simplify right side
   1,775.92x = 1,813,974.81
5. Step 5: Solve for x
   x = 1,813,974.81/1,775.92
6. Step 6: Final answer
   x = 1,021.43