Finding the Fourth Proportional to 1,850.28, 2,776.82 and 681.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,850.28 : 2,776.82 = 681.38 : x
2. Step 2: Convert to fraction form
   1,850.28/2,776.82 = 681.38/x
3. Step 3: Cross multiply
   1,850.28x = 2,776.82 × 681.38
4. Step 4: Simplify right side
   1,850.28x = 1,892,069.61
5. Step 5: Solve for x
   x = 1,892,069.61/1,850.28
6. Step 6: Final answer
   x = 1,022.59