Finding the Fourth Proportional to 2,078.44, 3,116.22 and 923.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.44 : 3,116.22 = 923.56 : x
2. Step 2: Convert to fraction form
   2,078.44/3,116.22 = 923.56/x
3. Step 3: Cross multiply
   2,078.44x = 3,116.22 × 923.56
4. Step 4: Simplify right side
   2,078.44x = 2,878,016.14
5. Step 5: Solve for x
   x = 2,878,016.14/2,078.44
6. Step 6: Final answer
   x = 1,384.70