Finding the Fourth Proportional to 3,967.89, 5,475.51 and 2,289.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.89 : 5,475.51 = 2,289.59 : x
2. Step 2: Convert to fraction form
   3,967.89/5,475.51 = 2,289.59/x
3. Step 3: Cross multiply
   3,967.89x = 5,475.51 × 2,289.59
4. Step 4: Simplify right side
   3,967.89x = 12,536,686.63
5. Step 5: Solve for x
   x = 12,536,686.63/3,967.89
6. Step 6: Final answer
   x = 3,159.53