Finding the Fourth Proportional to 2,369.94, 3,554.83 and 638.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,369.94 : 3,554.83 = 638.50 : x
2. Step 2: Convert to fraction form
   2,369.94/3,554.83 = 638.50/x
3. Step 3: Cross multiply
   2,369.94x = 3,554.83 × 638.50
4. Step 4: Simplify right side
   2,369.94x = 2,269,758.96
5. Step 5: Solve for x
   x = 2,269,758.96/2,369.94
6. Step 6: Final answer
   x = 957.73