Finding the Fourth Proportional to 3,841.72, 5,764.38 and 1,991.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,841.72 : 5,764.38 = 1,991.83 : x
2. Step 2: Convert to fraction form
   3,841.72/5,764.38 = 1,991.83/x
3. Step 3: Cross multiply
   3,841.72x = 5,764.38 × 1,991.83
4. Step 4: Simplify right side
   3,841.72x = 11,481,650.60
5. Step 5: Solve for x
   x = 11,481,650.60/3,841.72
6. Step 6: Final answer
   x = 2,988.68