Finding the Fourth Proportional to 2,807.75, 4,212.24 and 1,076.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,807.75 : 4,212.24 = 1,076.38 : x
2. Step 2: Convert to fraction form
   2,807.75/4,212.24 = 1,076.38/x
3. Step 3: Cross multiply
   2,807.75x = 4,212.24 × 1,076.38
4. Step 4: Simplify right side
   2,807.75x = 4,533,970.89
5. Step 5: Solve for x
   x = 4,533,970.89/2,807.75
6. Step 6: Final answer
   x = 1,614.81