Finding the Fourth Proportional to 3,663.29, 5,491.62 and 1,322.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.29 : 5,491.62 = 1,322.74 : x
2. Step 2: Convert to fraction form
   3,663.29/5,491.62 = 1,322.74/x
3. Step 3: Cross multiply
   3,663.29x = 5,491.62 × 1,322.74
4. Step 4: Simplify right side
   3,663.29x = 7,263,978.83
5. Step 5: Solve for x
   x = 7,263,978.83/3,663.29
6. Step 6: Final answer
   x = 1,982.91