Finding the Fourth Proportional to 3,967.39, 5,475.54 and 2,288.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.39 : 5,475.54 = 2,288.89 : x
2. Step 2: Convert to fraction form
   3,967.39/5,475.54 = 2,288.89/x
3. Step 3: Cross multiply
   3,967.39x = 5,475.54 × 2,288.89
4. Step 4: Simplify right side
   3,967.39x = 12,532,908.75
5. Step 5: Solve for x
   x = 12,532,908.75/3,967.39
6. Step 6: Final answer
   x = 3,158.98