Finding the Fourth Proportional to 2,889.38, 4,335.71 and 2,865.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,889.38 : 4,335.71 = 2,865.89 : x
2. Step 2: Convert to fraction form
   2,889.38/4,335.71 = 2,865.89/x
3. Step 3: Cross multiply
   2,889.38x = 4,335.71 × 2,865.89
4. Step 4: Simplify right side
   2,889.38x = 12,425,631.92
5. Step 5: Solve for x
   x = 12,425,631.92/2,889.38
6. Step 6: Final answer
   x = 4,300.46