Finding the Fourth Proportional to 2,553.48, 3,825.18 and 1,319.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.48 : 3,825.18 = 1,319.40 : x
2. Step 2: Convert to fraction form
   2,553.48/3,825.18 = 1,319.40/x
3. Step 3: Cross multiply
   2,553.48x = 3,825.18 × 1,319.40
4. Step 4: Simplify right side
   2,553.48x = 5,046,942.49
5. Step 5: Solve for x
   x = 5,046,942.49/2,553.48
6. Step 6: Final answer
   x = 1,976.50