Finding the Fourth Proportional to 2,520.01, 3,780.61 and 960.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.01 : 3,780.61 = 960.09 : x
2. Step 2: Convert to fraction form
   2,520.01/3,780.61 = 960.09/x
3. Step 3: Cross multiply
   2,520.01x = 3,780.61 × 960.09
4. Step 4: Simplify right side
   2,520.01x = 3,629,709.28
5. Step 5: Solve for x
   x = 3,629,709.28/2,520.01
6. Step 6: Final answer
   x = 1,440.35