Finding the Fourth Proportional to 1,987.86, 2,743.20 and 1,103.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.86 : 2,743.20 = 1,103.52 : x
2. Step 2: Convert to fraction form
   1,987.86/2,743.20 = 1,103.52/x
3. Step 3: Cross multiply
   1,987.86x = 2,743.20 × 1,103.52
4. Step 4: Simplify right side
   1,987.86x = 3,027,176.06
5. Step 5: Solve for x
   x = 3,027,176.06/1,987.86
6. Step 6: Final answer
   x = 1,522.83