Finding the Fourth Proportional to 1,617.50, 2,231.56 and 1,058.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.50 : 2,231.56 = 1,058.29 : x
2. Step 2: Convert to fraction form
   1,617.50/2,231.56 = 1,058.29/x
3. Step 3: Cross multiply
   1,617.50x = 2,231.56 × 1,058.29
4. Step 4: Simplify right side
   1,617.50x = 2,361,637.63
5. Step 5: Solve for x
   x = 2,361,637.63/1,617.50
6. Step 6: Final answer
   x = 1,460.05