Finding the Fourth Proportional to 1,987.40, 2,743 and 1,269.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.40 : 2,743 = 1,269.12 : x
2. Step 2: Convert to fraction form
   1,987.40/2,743 = 1,269.12/x
3. Step 3: Cross multiply
   1,987.40x = 2,743 × 1,269.12
4. Step 4: Simplify right side
   1,987.40x = 3,481,196.16
5. Step 5: Solve for x
   x = 3,481,196.16/1,987.40
6. Step 6: Final answer
   x = 1,751.63