Finding the Fourth Proportional to 2,831.86, 4,245.80 and 1,076.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,831.86 : 4,245.80 = 1,076.96 : x
2. Step 2: Convert to fraction form
   2,831.86/4,245.80 = 1,076.96/x
3. Step 3: Cross multiply
   2,831.86x = 4,245.80 × 1,076.96
4. Step 4: Simplify right side
   2,831.86x = 4,572,570.07
5. Step 5: Solve for x
   x = 4,572,570.07/2,831.86
6. Step 6: Final answer
   x = 1,614.69