Finding the Fourth Proportional to 1,182.22, 1,631.54 and 685.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.22 : 1,631.54 = 685.01 : x
2. Step 2: Convert to fraction form
   1,182.22/1,631.54 = 685.01/x
3. Step 3: Cross multiply
   1,182.22x = 1,631.54 × 685.01
4. Step 4: Simplify right side
   1,182.22x = 1,117,627.01
5. Step 5: Solve for x
   x = 1,117,627.01/1,182.22
6. Step 6: Final answer
   x = 945.36