Finding the Fourth Proportional to 1,792.50, 2,687.43 and 681.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,792.50 : 2,687.43 = 681.72 : x
2. Step 2: Convert to fraction form
   1,792.50/2,687.43 = 681.72/x
3. Step 3: Cross multiply
   1,792.50x = 2,687.43 × 681.72
4. Step 4: Simplify right side
   1,792.50x = 1,832,074.78
5. Step 5: Solve for x
   x = 1,832,074.78/1,792.50
6. Step 6: Final answer
   x = 1,022.08