Finding the Fourth Proportional to 2,487, 3,730.94 and 843.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487 : 3,730.94 = 843.72 : x
2. Step 2: Convert to fraction form
   2,487/3,730.94 = 843.72/x
3. Step 3: Cross multiply
   2,487x = 3,730.94 × 843.72
4. Step 4: Simplify right side
   2,487x = 3,147,868.70
5. Step 5: Solve for x
   x = 3,147,868.70/2,487
6. Step 6: Final answer
   x = 1,265.73