Finding the Fourth Proportional to 2,487.51, 3,730.79 and 843.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.51 : 3,730.79 = 843.89 : x
2. Step 2: Convert to fraction form
   2,487.51/3,730.79 = 843.89/x
3. Step 3: Cross multiply
   2,487.51x = 3,730.79 × 843.89
4. Step 4: Simplify right side
   2,487.51x = 3,148,359.83
5. Step 5: Solve for x
   x = 3,148,359.83/2,487.51
6. Step 6: Final answer
   x = 1,265.67