Finding the Fourth Proportional to 3,118.82, 4,678.59 and 927.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,118.82 : 4,678.59 = 927.86 : x
2. Step 2: Convert to fraction form
   3,118.82/4,678.59 = 927.86/x
3. Step 3: Cross multiply
   3,118.82x = 4,678.59 × 927.86
4. Step 4: Simplify right side
   3,118.82x = 4,341,076.52
5. Step 5: Solve for x
   x = 4,341,076.52/3,118.82
6. Step 6: Final answer
   x = 1,391.90