Finding the Fourth Proportional to 3,521.27, 5,282.42 and 1,330.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,521.27 : 5,282.42 = 1,330.53 : x
2. Step 2: Convert to fraction form
   3,521.27/5,282.42 = 1,330.53/x
3. Step 3: Cross multiply
   3,521.27x = 5,282.42 × 1,330.53
4. Step 4: Simplify right side
   3,521.27x = 7,028,391.82
5. Step 5: Solve for x
   x = 7,028,391.82/3,521.27
6. Step 6: Final answer
   x = 1,995.98