Finding the Fourth Proportional to 3,522.31, 5,281.86 and 1,329.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,522.31 : 5,281.86 = 1,329.48 : x
2. Step 2: Convert to fraction form
   3,522.31/5,281.86 = 1,329.48/x
3. Step 3: Cross multiply
   3,522.31x = 5,281.86 × 1,329.48
4. Step 4: Simplify right side
   3,522.31x = 7,022,127.23
5. Step 5: Solve for x
   x = 7,022,127.23/3,522.31
6. Step 6: Final answer
   x = 1,993.61