Finding the Fourth Proportional to 1,182.94, 1,632.30 and 685.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.94 : 1,632.30 = 685.55 : x
2. Step 2: Convert to fraction form
   1,182.94/1,632.30 = 685.55/x
3. Step 3: Cross multiply
   1,182.94x = 1,632.30 × 685.55
4. Step 4: Simplify right side
   1,182.94x = 1,119,023.27
5. Step 5: Solve for x
   x = 1,119,023.27/1,182.94
6. Step 6: Final answer
   x = 945.97