Finding the Fourth Proportional to 1,987.77, 2,743.24 and 1,103.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.77 : 2,743.24 = 1,103.59 : x
2. Step 2: Convert to fraction form
   1,987.77/2,743.24 = 1,103.59/x
3. Step 3: Cross multiply
   1,987.77x = 2,743.24 × 1,103.59
4. Step 4: Simplify right side
   1,987.77x = 3,027,398.52
5. Step 5: Solve for x
   x = 3,027,398.52/1,987.77
6. Step 6: Final answer
   x = 1,523.02