Finding the Fourth Proportional to 1,987.97, 2,743.22 and 1,103.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.97 : 2,743.22 = 1,103.72 : x
2. Step 2: Convert to fraction form
   1,987.97/2,743.22 = 1,103.72/x
3. Step 3: Cross multiply
   1,987.97x = 2,743.22 × 1,103.72
4. Step 4: Simplify right side
   1,987.97x = 3,027,741.26
5. Step 5: Solve for x
   x = 3,027,741.26/1,987.97
6. Step 6: Final answer
   x = 1,523.03