Finding the Fourth Proportional to 1,617.17, 2,424.94 and 825.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.17 : 2,424.94 = 825.59 : x
2. Step 2: Convert to fraction form
   1,617.17/2,424.94 = 825.59/x
3. Step 3: Cross multiply
   1,617.17x = 2,424.94 × 825.59
4. Step 4: Simplify right side
   1,617.17x = 2,002,010.21
5. Step 5: Solve for x
   x = 2,002,010.21/1,617.17
6. Step 6: Final answer
   x = 1,237.98