Finding the Fourth Proportional to 1,323.72, 1,987.83 and 1,104.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.72 : 1,987.83 = 1,104.12 : x
2. Step 2: Convert to fraction form
   1,323.72/1,987.83 = 1,104.12/x
3. Step 3: Cross multiply
   1,323.72x = 1,987.83 × 1,104.12
4. Step 4: Simplify right side
   1,323.72x = 2,194,802.86
5. Step 5: Solve for x
   x = 2,194,802.86/1,323.72
6. Step 6: Final answer
   x = 1,658.06