Finding the Fourth Proportional to 1,050.50, 1,450.06 and 636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.50 : 1,450.06 = 636.50 : x
2. Step 2: Convert to fraction form
   1,050.50/1,450.06 = 636.50/x
3. Step 3: Cross multiply
   1,050.50x = 1,450.06 × 636.50
4. Step 4: Simplify right side
   1,050.50x = 922,963.19
5. Step 5: Solve for x
   x = 922,963.19/1,050.50
6. Step 6: Final answer
   x = 878.59