Finding the Fourth Proportional to 1,078.94, 1,617.05 and 585.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.94 : 1,617.05 = 585.34 : x
2. Step 2: Convert to fraction form
   1,078.94/1,617.05 = 585.34/x
3. Step 3: Cross multiply
   1,078.94x = 1,617.05 × 585.34
4. Step 4: Simplify right side
   1,078.94x = 946,521.47
5. Step 5: Solve for x
   x = 946,521.47/1,078.94
6. Step 6: Final answer
   x = 877.27