Finding the Fourth Proportional to 3,677.37, 5,074.81 and 1,998.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,677.37 : 5,074.81 = 1,998.78 : x
2. Step 2: Convert to fraction form
   3,677.37/5,074.81 = 1,998.78/x
3. Step 3: Cross multiply
   3,677.37x = 5,074.81 × 1,998.78
4. Step 4: Simplify right side
   3,677.37x = 10,143,445.26
5. Step 5: Solve for x
   x = 10,143,445.26/3,677.37
6. Step 6: Final answer
   x = 2,758.34