Finding the Fourth Proportional to 3,630.89, 5,447.55 and 1,440.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,630.89 : 5,447.55 = 1,440.24 : x
2. Step 2: Convert to fraction form
   3,630.89/5,447.55 = 1,440.24/x
3. Step 3: Cross multiply
   3,630.89x = 5,447.55 × 1,440.24
4. Step 4: Simplify right side
   3,630.89x = 7,845,779.41
5. Step 5: Solve for x
   x = 7,845,779.41/3,630.89
6. Step 6: Final answer
   x = 2,160.84