Finding the Fourth Proportional to 1,182.70, 1,632.15 and 685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.70 : 1,632.15 = 685.50 : x
2. Step 2: Convert to fraction form
   1,182.70/1,632.15 = 685.50/x
3. Step 3: Cross multiply
   1,182.70x = 1,632.15 × 685.50
4. Step 4: Simplify right side
   1,182.70x = 1,118,838.83
5. Step 5: Solve for x
   x = 1,118,838.83/1,182.70
6. Step 6: Final answer
   x = 946.00