Finding the Fourth Proportional to 1,143.83, 1,718.96 and 681.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.83 : 1,718.96 = 681.69 : x
2. Step 2: Convert to fraction form
   1,143.83/1,718.96 = 681.69/x
3. Step 3: Cross multiply
   1,143.83x = 1,718.96 × 681.69
4. Step 4: Simplify right side
   1,143.83x = 1,171,794.43
5. Step 5: Solve for x
   x = 1,171,794.43/1,143.83
6. Step 6: Final answer
   x = 1,024.45