Finding the Fourth Proportional to 3,630.72, 5,443.86 and 1,440.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,630.72 : 5,443.86 = 1,440.48 : x
2. Step 2: Convert to fraction form
   3,630.72/5,443.86 = 1,440.48/x
3. Step 3: Cross multiply
   3,630.72x = 5,443.86 × 1,440.48
4. Step 4: Simplify right side
   3,630.72x = 7,841,771.45
5. Step 5: Solve for x
   x = 7,841,771.45/3,630.72
6. Step 6: Final answer
   x = 2,159.84