Finding the Fourth Proportional to 1,084.49, 1,496.09 and 636.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.49 : 1,496.09 = 636.37 : x
2. Step 2: Convert to fraction form
   1,084.49/1,496.09 = 636.37/x
3. Step 3: Cross multiply
   1,084.49x = 1,496.09 × 636.37
4. Step 4: Simplify right side
   1,084.49x = 952,058.77
5. Step 5: Solve for x
   x = 952,058.77/1,084.49
6. Step 6: Final answer
   x = 877.89