Finding the Fourth Proportional to 1,987.34, 2,742.41 and 1,103.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.34 : 2,742.41 = 1,103.09 : x
2. Step 2: Convert to fraction form
   1,987.34/2,742.41 = 1,103.09/x
3. Step 3: Cross multiply
   1,987.34x = 2,742.41 × 1,103.09
4. Step 4: Simplify right side
   1,987.34x = 3,025,125.05
5. Step 5: Solve for x
   x = 3,025,125.05/1,987.34
6. Step 6: Final answer
   x = 1,522.20