Finding the Fourth Proportional to 2,868.87, 3,957.36 and 1,804.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.87 : 3,957.36 = 1,804.96 : x
2. Step 2: Convert to fraction form
   2,868.87/3,957.36 = 1,804.96/x
3. Step 3: Cross multiply
   2,868.87x = 3,957.36 × 1,804.96
4. Step 4: Simplify right side
   2,868.87x = 7,142,856.72
5. Step 5: Solve for x
   x = 7,142,856.72/2,868.87
6. Step 6: Final answer
   x = 2,489.78