Finding the Fourth Proportional to 2,431.77, 3,648.41 and 871.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.77 : 3,648.41 = 871.73 : x
2. Step 2: Convert to fraction form
   2,431.77/3,648.41 = 871.73/x
3. Step 3: Cross multiply
   2,431.77x = 3,648.41 × 871.73
4. Step 4: Simplify right side
   2,431.77x = 3,180,428.45
5. Step 5: Solve for x
   x = 3,180,428.45/2,431.77
6. Step 6: Final answer
   x = 1,307.87