Finding the Fourth Proportional to 1,179.39, 1,627.56 and 648.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,179.39 : 1,627.56 = 648.27 : x
2. Step 2: Convert to fraction form
   1,179.39/1,627.56 = 648.27/x
3. Step 3: Cross multiply
   1,179.39x = 1,627.56 × 648.27
4. Step 4: Simplify right side
   1,179.39x = 1,055,098.32
5. Step 5: Solve for x
   x = 1,055,098.32/1,179.39
6. Step 6: Final answer
   x = 894.61