Finding the Fourth Proportional to 2,369.51, 3,553.72 and 638.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,369.51 : 3,553.72 = 638.27 : x
2. Step 2: Convert to fraction form
   2,369.51/3,553.72 = 638.27/x
3. Step 3: Cross multiply
   2,369.51x = 3,553.72 × 638.27
4. Step 4: Simplify right side
   2,369.51x = 2,268,211.90
5. Step 5: Solve for x
   x = 2,268,211.90/2,369.51
6. Step 6: Final answer
   x = 957.25