Finding the Fourth Proportional to 1,169.37, 1,613.74 and 638.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,169.37 : 1,613.74 = 638.27 : x
2. Step 2: Convert to fraction form
   1,169.37/1,613.74 = 638.27/x
3. Step 3: Cross multiply
   1,169.37x = 1,613.74 × 638.27
4. Step 4: Simplify right side
   1,169.37x = 1,030,001.83
5. Step 5: Solve for x
   x = 1,030,001.83/1,169.37
6. Step 6: Final answer
   x = 880.82