Finding the Fourth Proportional to 1,987.53, 2,742.79 and 1,103.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.53 : 2,742.79 = 1,103.37 : x
2. Step 2: Convert to fraction form
   1,987.53/2,742.79 = 1,103.37/x
3. Step 3: Cross multiply
   1,987.53x = 2,742.79 × 1,103.37
4. Step 4: Simplify right side
   1,987.53x = 3,026,306.69
5. Step 5: Solve for x
   x = 3,026,306.69/1,987.53
6. Step 6: Final answer
   x = 1,522.65