Finding the Fourth Proportional to 2,553.31, 3,828.43 and 1,147.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.31 : 3,828.43 = 1,147.48 : x
2. Step 2: Convert to fraction form
   2,553.31/3,828.43 = 1,147.48/x
3. Step 3: Cross multiply
   2,553.31x = 3,828.43 × 1,147.48
4. Step 4: Simplify right side
   2,553.31x = 4,393,046.86
5. Step 5: Solve for x
   x = 4,393,046.86/2,553.31
6. Step 6: Final answer
   x = 1,720.53