Finding the Fourth Proportional to 2,620.48, 3,616.12 and 1,441.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.48 : 3,616.12 = 1,441.36 : x
2. Step 2: Convert to fraction form
   2,620.48/3,616.12 = 1,441.36/x
3. Step 3: Cross multiply
   2,620.48x = 3,616.12 × 1,441.36
4. Step 4: Simplify right side
   2,620.48x = 5,212,130.72
5. Step 5: Solve for x
   x = 5,212,130.72/2,620.48
6. Step 6: Final answer
   x = 1,989.00