Finding the Fourth Proportional to 3,663.91, 5,494.71 and 1,323.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.91 : 5,494.71 = 1,323.61 : x
2. Step 2: Convert to fraction form
   3,663.91/5,494.71 = 1,323.61/x
3. Step 3: Cross multiply
   3,663.91x = 5,494.71 × 1,323.61
4. Step 4: Simplify right side
   3,663.91x = 7,272,852.20
5. Step 5: Solve for x
   x = 7,272,852.20/3,663.91
6. Step 6: Final answer
   x = 1,984.99