Finding the Fourth Proportional to 2,555.37, 3,831.71 and 1,930.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.37 : 3,831.71 = 1,930.86 : x
2. Step 2: Convert to fraction form
   2,555.37/3,831.71 = 1,930.86/x
3. Step 3: Cross multiply
   2,555.37x = 3,831.71 × 1,930.86
4. Step 4: Simplify right side
   2,555.37x = 7,398,485.92
5. Step 5: Solve for x
   x = 7,398,485.92/2,555.37
6. Step 6: Final answer
   x = 2,895.27