Finding the Fourth Proportional to 1,987.88, 2,743.02 and 1,103.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.88 : 2,743.02 = 1,103.56 : x
2. Step 2: Convert to fraction form
   1,987.88/2,743.02 = 1,103.56/x
3. Step 3: Cross multiply
   1,987.88x = 2,743.02 × 1,103.56
4. Step 4: Simplify right side
   1,987.88x = 3,027,080.29
5. Step 5: Solve for x
   x = 3,027,080.29/1,987.88
6. Step 6: Final answer
   x = 1,522.77