Finding the Fourth Proportional to 2,783.43, 4,154.83 and 2,577.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,783.43 : 4,154.83 = 2,577.87 : x
2. Step 2: Convert to fraction form
   2,783.43/4,154.83 = 2,577.87/x
3. Step 3: Cross multiply
   2,783.43x = 4,154.83 × 2,577.87
4. Step 4: Simplify right side
   2,783.43x = 10,710,605.17
5. Step 5: Solve for x
   x = 10,710,605.17/2,783.43
6. Step 6: Final answer
   x = 3,847.99