Finding the Fourth Proportional to 1,987.98, 2,743.32 and 1,103.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.98 : 2,743.32 = 1,103.76 : x
2. Step 2: Convert to fraction form
   1,987.98/2,743.32 = 1,103.76/x
3. Step 3: Cross multiply
   1,987.98x = 2,743.32 × 1,103.76
4. Step 4: Simplify right side
   1,987.98x = 3,027,966.88
5. Step 5: Solve for x
   x = 3,027,966.88/1,987.98
6. Step 6: Final answer
   x = 1,523.14