Finding the Fourth Proportional to 1,067.17, 1,601.04 and 656.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.17 : 1,601.04 = 656.56 : x
2. Step 2: Convert to fraction form
   1,067.17/1,601.04 = 656.56/x
3. Step 3: Cross multiply
   1,067.17x = 1,601.04 × 656.56
4. Step 4: Simplify right side
   1,067.17x = 1,051,178.82
5. Step 5: Solve for x
   x = 1,051,178.82/1,067.17
6. Step 6: Final answer
   x = 985.02