Finding the Fourth Proportional to 2,489.92, 3,735.72 and 1,103.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489.92 : 3,735.72 = 1,103.60 : x
2. Step 2: Convert to fraction form
   2,489.92/3,735.72 = 1,103.60/x
3. Step 3: Cross multiply
   2,489.92x = 3,735.72 × 1,103.60
4. Step 4: Simplify right side
   2,489.92x = 4,122,740.59
5. Step 5: Solve for x
   x = 4,122,740.59/2,489.92
6. Step 6: Final answer
   x = 1,655.77