Finding the Fourth Proportional to 1,987.71, 2,740.14 and 1,241.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987.71 : 2,740.14 = 1,241.34 : x
2. Step 2: Convert to fraction form
   1,987.71/2,740.14 = 1,241.34/x
3. Step 3: Cross multiply
   1,987.71x = 2,740.14 × 1,241.34
4. Step 4: Simplify right side
   1,987.71x = 3,401,445.39
5. Step 5: Solve for x
   x = 3,401,445.39/1,987.71
6. Step 6: Final answer
   x = 1,711.24