Finding the Fourth Proportional to 3,339.72, 5,009.33 and 1,148.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,339.72 : 5,009.33 = 1,148.40 : x
2. Step 2: Convert to fraction form
   3,339.72/5,009.33 = 1,148.40/x
3. Step 3: Cross multiply
   3,339.72x = 5,009.33 × 1,148.40
4. Step 4: Simplify right side
   3,339.72x = 5,752,708.83
5. Step 5: Solve for x
   x = 5,752,708.83/3,339.72
6. Step 6: Final answer
   x = 1,722.51