Finding the Fourth Proportional to 2,620.56, 3,616.35 and 1,441.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.56 : 3,616.35 = 1,441.61 : x
2. Step 2: Convert to fraction form
   2,620.56/3,616.35 = 1,441.61/x
3. Step 3: Cross multiply
   2,620.56x = 3,616.35 × 1,441.61
4. Step 4: Simplify right side
   2,620.56x = 5,213,356.40
5. Step 5: Solve for x
   x = 5,213,356.40/2,620.56
6. Step 6: Final answer
   x = 1,989.40