Finding the Fourth Proportional to 1,063.82, 1,468.03 and 644.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.82 : 1,468.03 = 644.10 : x
2. Step 2: Convert to fraction form
   1,063.82/1,468.03 = 644.10/x
3. Step 3: Cross multiply
   1,063.82x = 1,468.03 × 644.10
4. Step 4: Simplify right side
   1,063.82x = 945,558.12
5. Step 5: Solve for x
   x = 945,558.12/1,063.82
6. Step 6: Final answer
   x = 888.83