Finding the Fourth Proportional to 1,063.94, 1,468.27 and 644.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.94 : 1,468.27 = 644.37 : x
2. Step 2: Convert to fraction form
   1,063.94/1,468.27 = 644.37/x
3. Step 3: Cross multiply
   1,063.94x = 1,468.27 × 644.37
4. Step 4: Simplify right side
   1,063.94x = 946,109.14
5. Step 5: Solve for x
   x = 946,109.14/1,063.94
6. Step 6: Final answer
   x = 889.25