Finding the Fourth Proportional to 2,900.32, 4,000.38 and 2,665

Step by Step Solution

1. Step 1: Write the proportion equation
   2,900.32 : 4,000.38 = 2,665 : x
2. Step 2: Convert to fraction form
   2,900.32/4,000.38 = 2,665/x
3. Step 3: Cross multiply
   2,900.32x = 4,000.38 × 2,665
4. Step 4: Simplify right side
   2,900.32x = 10,661,012.70
5. Step 5: Solve for x
   x = 10,661,012.70/2,900.32
6. Step 6: Final answer
   x = 3,675.81