Finding the Fourth Proportional to 1,061.45, 1,464.49 and 688.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.45 : 1,464.49 = 688.44 : x
2. Step 2: Convert to fraction form
   1,061.45/1,464.49 = 688.44/x
3. Step 3: Cross multiply
   1,061.45x = 1,464.49 × 688.44
4. Step 4: Simplify right side
   1,061.45x = 1,008,213.50
5. Step 5: Solve for x
   x = 1,008,213.50/1,061.45
6. Step 6: Final answer
   x = 949.85