Finding the Fourth Proportional to 3,967.30, 5,475.46 and 2,288.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.30 : 5,475.46 = 2,288.38 : x
2. Step 2: Convert to fraction form
   3,967.30/5,475.46 = 2,288.38/x
3. Step 3: Cross multiply
   3,967.30x = 5,475.46 × 2,288.38
4. Step 4: Simplify right side
   3,967.30x = 12,529,933.15
5. Step 5: Solve for x
   x = 12,529,933.15/3,967.30
6. Step 6: Final answer
   x = 3,158.30