Finding the Fourth Proportional to 1,988.43, 2,743.71 and 1,104.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,988.43 : 2,743.71 = 1,104.21 : x
2. Step 2: Convert to fraction form
   1,988.43/2,743.71 = 1,104.21/x
3. Step 3: Cross multiply
   1,988.43x = 2,743.71 × 1,104.21
4. Step 4: Simplify right side
   1,988.43x = 3,029,632.02
5. Step 5: Solve for x
   x = 3,029,632.02/1,988.43
6. Step 6: Final answer
   x = 1,523.63