Finding the Fourth Proportional to 1,617.25, 2,231.22 and 1,058.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.25 : 2,231.22 = 1,058.04 : x
2. Step 2: Convert to fraction form
   1,617.25/2,231.22 = 1,058.04/x
3. Step 3: Cross multiply
   1,617.25x = 2,231.22 × 1,058.04
4. Step 4: Simplify right side
   1,617.25x = 2,360,714.72
5. Step 5: Solve for x
   x = 2,360,714.72/1,617.25
6. Step 6: Final answer
   x = 1,459.71