Finding the Fourth Proportional to 2,667.24, 4,004.10 and 2,485.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.24 : 4,004.10 = 2,485.80 : x
2. Step 2: Convert to fraction form
   2,667.24/4,004.10 = 2,485.80/x
3. Step 3: Cross multiply
   2,667.24x = 4,004.10 × 2,485.80
4. Step 4: Simplify right side
   2,667.24x = 9,953,391.78
5. Step 5: Solve for x
   x = 9,953,391.78/2,667.24
6. Step 6: Final answer
   x = 3,731.72