Finding the Fourth Proportional to 2,153.14, 3,231.73 and 1,058.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.14 : 3,231.73 = 1,058.29 : x
2. Step 2: Convert to fraction form
   2,153.14/3,231.73 = 1,058.29/x
3. Step 3: Cross multiply
   2,153.14x = 3,231.73 × 1,058.29
4. Step 4: Simplify right side
   2,153.14x = 3,420,096.82
5. Step 5: Solve for x
   x = 3,420,096.82/2,153.14
6. Step 6: Final answer
   x = 1,588.42