Finding the Fourth Proportional to 3,799.98, 5,701.77 and 2,631.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,799.98 : 5,701.77 = 2,631.78 : x
2. Step 2: Convert to fraction form
   3,799.98/5,701.77 = 2,631.78/x
3. Step 3: Cross multiply
   3,799.98x = 5,701.77 × 2,631.78
4. Step 4: Simplify right side
   3,799.98x = 15,005,804.25
5. Step 5: Solve for x
   x = 15,005,804.25/3,799.98
6. Step 6: Final answer
   x = 3,948.92