Finding the Fourth Proportional to 1,059.55, 1,460.82 and 685.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.55 : 1,460.82 = 685.87 : x
2. Step 2: Convert to fraction form
   1,059.55/1,460.82 = 685.87/x
3. Step 3: Cross multiply
   1,059.55x = 1,460.82 × 685.87
4. Step 4: Simplify right side
   1,059.55x = 1,001,932.61
5. Step 5: Solve for x
   x = 1,001,932.61/1,059.55
6. Step 6: Final answer
   x = 945.62