Finding the Fourth Proportional to 1,987.26, 2,742.59 and 1,103.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.26 : 2,742.59 = 1,103.23 : x
2. Step 2: Convert to fraction form
   1,987.26/2,742.59 = 1,103.23/x
3. Step 3: Cross multiply
   1,987.26x = 2,742.59 × 1,103.23
4. Step 4: Simplify right side
   1,987.26x = 3,025,707.57
5. Step 5: Solve for x
   x = 3,025,707.57/1,987.26
6. Step 6: Final answer
   x = 1,522.55