Finding the Fourth Proportional to 2,076.87, 2,866.46 and 1,238.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.87 : 2,866.46 = 1,238.06 : x
2. Step 2: Convert to fraction form
   2,076.87/2,866.46 = 1,238.06/x
3. Step 3: Cross multiply
   2,076.87x = 2,866.46 × 1,238.06
4. Step 4: Simplify right side
   2,076.87x = 3,548,850.44
5. Step 5: Solve for x
   x = 3,548,850.44/2,076.87
6. Step 6: Final answer
   x = 1,708.75