Finding the Fourth Proportional to 2,485.52, 3,729.72 and 1,331.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.52 : 3,729.72 = 1,331.92 : x
2. Step 2: Convert to fraction form
   2,485.52/3,729.72 = 1,331.92/x
3. Step 3: Cross multiply
   2,485.52x = 3,729.72 × 1,331.92
4. Step 4: Simplify right side
   2,485.52x = 4,967,688.66
5. Step 5: Solve for x
   x = 4,967,688.66/2,485.52
6. Step 6: Final answer
   x = 1,998.65