Finding the Fourth Proportional to 1,055.94, 1,456.95 and 636.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.94 : 1,456.95 = 636.18 : x
2. Step 2: Convert to fraction form
   1,055.94/1,456.95 = 636.18/x
3. Step 3: Cross multiply
   1,055.94x = 1,456.95 × 636.18
4. Step 4: Simplify right side
   1,055.94x = 926,882.45
5. Step 5: Solve for x
   x = 926,882.45/1,055.94
6. Step 6: Final answer
   x = 877.78