Finding the Fourth Proportional to 3,734.40, 5,148.72 and 2,553.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,734.40 : 5,148.72 = 2,553.60 : x
2. Step 2: Convert to fraction form
   3,734.40/5,148.72 = 2,553.60/x
3. Step 3: Cross multiply
   3,734.40x = 5,148.72 × 2,553.60
4. Step 4: Simplify right side
   3,734.40x = 13,147,771.39
5. Step 5: Solve for x
   x = 13,147,771.39/3,734.40
6. Step 6: Final answer
   x = 3,520.72