Finding the Fourth Proportional to 4,155.50, 5,732.88 and 2,897.30

Step by Step Solution

1. Step 1: Write the proportion equation
   4,155.50 : 5,732.88 = 2,897.30 : x
2. Step 2: Convert to fraction form
   4,155.50/5,732.88 = 2,897.30/x
3. Step 3: Cross multiply
   4,155.50x = 5,732.88 × 2,897.30
4. Step 4: Simplify right side
   4,155.50x = 16,609,876.69
5. Step 5: Solve for x
   x = 16,609,876.69/4,155.50
6. Step 6: Final answer
   x = 3,997.08