Finding the Fourth Proportional to 1,182.56, 1,631.94 and 685.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.56 : 1,631.94 = 685.48 : x
2. Step 2: Convert to fraction form
   1,182.56/1,631.94 = 685.48/x
3. Step 3: Cross multiply
   1,182.56x = 1,631.94 × 685.48
4. Step 4: Simplify right side
   1,182.56x = 1,118,662.23
5. Step 5: Solve for x
   x = 1,118,662.23/1,182.56
6. Step 6: Final answer
   x = 945.97