Finding the Fourth Proportional to 1,617.73, 2,426.69 and 693.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.73 : 2,426.69 = 693.31 : x
2. Step 2: Convert to fraction form
   1,617.73/2,426.69 = 693.31/x
3. Step 3: Cross multiply
   1,617.73x = 2,426.69 × 693.31
4. Step 4: Simplify right side
   1,617.73x = 1,682,448.44
5. Step 5: Solve for x
   x = 1,682,448.44/1,617.73
6. Step 6: Final answer
   x = 1,040.01