Finding the Fourth Proportional to 1,522.02, 2,281.41 and 644.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.02 : 2,281.41 = 644.34 : x
2. Step 2: Convert to fraction form
   1,522.02/2,281.41 = 644.34/x
3. Step 3: Cross multiply
   1,522.02x = 2,281.41 × 644.34
4. Step 4: Simplify right side
   1,522.02x = 1,470,003.72
5. Step 5: Solve for x
   x = 1,470,003.72/1,522.02
6. Step 6: Final answer
   x = 965.82