Finding the Fourth Proportional to 2,620.31, 3,615.95 and 1,441.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.31 : 3,615.95 = 1,441.38 : x
2. Step 2: Convert to fraction form
   2,620.31/3,615.95 = 1,441.38/x
3. Step 3: Cross multiply
   2,620.31x = 3,615.95 × 1,441.38
4. Step 4: Simplify right side
   2,620.31x = 5,211,936.56
5. Step 5: Solve for x
   x = 5,211,936.56/2,620.31
6. Step 6: Final answer
   x = 1,989.06