Finding the Fourth Proportional to 1,987.32, 2,742.56 and 1,103.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.32 : 2,742.56 = 1,103.16 : x
2. Step 2: Convert to fraction form
   1,987.32/2,742.56 = 1,103.16/x
3. Step 3: Cross multiply
   1,987.32x = 2,742.56 × 1,103.16
4. Step 4: Simplify right side
   1,987.32x = 3,025,482.49
5. Step 5: Solve for x
   x = 3,025,482.49/1,987.32
6. Step 6: Final answer
   x = 1,522.39