Finding the Fourth Proportional to 3,523.50, 5,280.12 and 1,330.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,523.50 : 5,280.12 = 1,330.02 : x
2. Step 2: Convert to fraction form
   3,523.50/5,280.12 = 1,330.02/x
3. Step 3: Cross multiply
   3,523.50x = 5,280.12 × 1,330.02
4. Step 4: Simplify right side
   3,523.50x = 7,022,665.20
5. Step 5: Solve for x
   x = 7,022,665.20/3,523.50
6. Step 6: Final answer
   x = 1,993.09