Finding the Fourth Proportional to 2,620.12, 3,615.72 and 1,441.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.12 : 3,615.72 = 1,441.18 : x
2. Step 2: Convert to fraction form
   2,620.12/3,615.72 = 1,441.18/x
3. Step 3: Cross multiply
   2,620.12x = 3,615.72 × 1,441.18
4. Step 4: Simplify right side
   2,620.12x = 5,210,903.35
5. Step 5: Solve for x
   x = 5,210,903.35/2,620.12
6. Step 6: Final answer
   x = 1,988.80