Finding the Fourth Proportional to 2,742.52, 4,112.74 and 987.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.52 : 4,112.74 = 987.03 : x
2. Step 2: Convert to fraction form
   2,742.52/4,112.74 = 987.03/x
3. Step 3: Cross multiply
   2,742.52x = 4,112.74 × 987.03
4. Step 4: Simplify right side
   2,742.52x = 4,059,397.76
5. Step 5: Solve for x
   x = 4,059,397.76/2,742.52
6. Step 6: Final answer
   x = 1,480.17