Finding the Fourth Proportional to 3,336.55, 5,005.31 and 1,144.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,336.55 : 5,005.31 = 1,144.69 : x
2. Step 2: Convert to fraction form
   3,336.55/5,005.31 = 1,144.69/x
3. Step 3: Cross multiply
   3,336.55x = 5,005.31 × 1,144.69
4. Step 4: Simplify right side
   3,336.55x = 5,729,510.07
5. Step 5: Solve for x
   x = 5,729,510.07/3,336.55
6. Step 6: Final answer
   x = 1,717.20