Finding the Fourth Proportional to 2,451.52, 3,677.97 and 991.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,451.52 : 3,677.97 = 991.69 : x
2. Step 2: Convert to fraction form
   2,451.52/3,677.97 = 991.69/x
3. Step 3: Cross multiply
   2,451.52x = 3,677.97 × 991.69
4. Step 4: Simplify right side
   2,451.52x = 3,647,401.11
5. Step 5: Solve for x
   x = 3,647,401.11/2,451.52
6. Step 6: Final answer
   x = 1,487.82