Finding the Fourth Proportional to 2,677.96, 4,015.92 and 1,290.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,677.96 : 4,015.92 = 1,290.83 : x
2. Step 2: Convert to fraction form
   2,677.96/4,015.92 = 1,290.83/x
3. Step 3: Cross multiply
   2,677.96x = 4,015.92 × 1,290.83
4. Step 4: Simplify right side
   2,677.96x = 5,183,870.01
5. Step 5: Solve for x
   x = 5,183,870.01/2,677.96
6. Step 6: Final answer
   x = 1,935.76