Finding the Fourth Proportional to 1,038.69, 1,558.04 and 656.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038.69 : 1,558.04 = 656.37 : x
2. Step 2: Convert to fraction form
   1,038.69/1,558.04 = 656.37/x
3. Step 3: Cross multiply
   1,038.69x = 1,558.04 × 656.37
4. Step 4: Simplify right side
   1,038.69x = 1,022,647.43
5. Step 5: Solve for x
   x = 1,022,647.43/1,038.69
6. Step 6: Final answer
   x = 984.56