Finding the Fourth Proportional to 3,630.87, 5,443.02 and 1,321.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,630.87 : 5,443.02 = 1,321.83 : x
2. Step 2: Convert to fraction form
   3,630.87/5,443.02 = 1,321.83/x
3. Step 3: Cross multiply
   3,630.87x = 5,443.02 × 1,321.83
4. Step 4: Simplify right side
   3,630.87x = 7,194,747.13
5. Step 5: Solve for x
   x = 7,194,747.13/3,630.87
6. Step 6: Final answer
   x = 1,981.55