Finding the Fourth Proportional to 3,520.38, 5,280.54 and 1,962.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,520.38 : 5,280.54 = 1,962.72 : x
2. Step 2: Convert to fraction form
   3,520.38/5,280.54 = 1,962.72/x
3. Step 3: Cross multiply
   3,520.38x = 5,280.54 × 1,962.72
4. Step 4: Simplify right side
   3,520.38x = 10,364,221.47
5. Step 5: Solve for x
   x = 10,364,221.47/3,520.38
6. Step 6: Final answer
   x = 2,944.06