Finding the Fourth Proportional to 1,058.49, 1,460.24 and 685.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.49 : 1,460.24 = 685.59 : x
2. Step 2: Convert to fraction form
   1,058.49/1,460.24 = 685.59/x
3. Step 3: Cross multiply
   1,058.49x = 1,460.24 × 685.59
4. Step 4: Simplify right side
   1,058.49x = 1,001,130.56
5. Step 5: Solve for x
   x = 1,001,130.56/1,058.49
6. Step 6: Final answer
   x = 945.81