Finding the Fourth Proportional to 2,889.56, 3,983.02 and 2,189.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,889.56 : 3,983.02 = 2,189.72 : x
2. Step 2: Convert to fraction form
   2,889.56/3,983.02 = 2,189.72/x
3. Step 3: Cross multiply
   2,889.56x = 3,983.02 × 2,189.72
4. Step 4: Simplify right side
   2,889.56x = 8,721,698.55
5. Step 5: Solve for x
   x = 8,721,698.55/2,889.56
6. Step 6: Final answer
   x = 3,018.35