Finding the Fourth Proportional to 1,297.30, 1,944.73 and 647.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297.30 : 1,944.73 = 647.42 : x
2. Step 2: Convert to fraction form
   1,297.30/1,944.73 = 647.42/x
3. Step 3: Cross multiply
   1,297.30x = 1,944.73 × 647.42
4. Step 4: Simplify right side
   1,297.30x = 1,259,057.10
5. Step 5: Solve for x
   x = 1,259,057.10/1,297.30
6. Step 6: Final answer
   x = 970.52