Finding the Fourth Proportional to 1,178.82, 1,626.78 and 654.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.82 : 1,626.78 = 654.86 : x
2. Step 2: Convert to fraction form
   1,178.82/1,626.78 = 654.86/x
3. Step 3: Cross multiply
   1,178.82x = 1,626.78 × 654.86
4. Step 4: Simplify right side
   1,178.82x = 1,065,313.15
5. Step 5: Solve for x
   x = 1,065,313.15/1,178.82
6. Step 6: Final answer
   x = 903.71