Finding the Fourth Proportional to 1,058.69, 1,460.53 and 685.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.69 : 1,460.53 = 685.69 : x
2. Step 2: Convert to fraction form
   1,058.69/1,460.53 = 685.69/x
3. Step 3: Cross multiply
   1,058.69x = 1,460.53 × 685.69
4. Step 4: Simplify right side
   1,058.69x = 1,001,470.82
5. Step 5: Solve for x
   x = 1,001,470.82/1,058.69
6. Step 6: Final answer
   x = 945.95