Finding the Fourth Proportional to 1,178.79, 1,626.72 and 654.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.79 : 1,626.72 = 654.81 : x
2. Step 2: Convert to fraction form
   1,178.79/1,626.72 = 654.81/x
3. Step 3: Cross multiply
   1,178.79x = 1,626.72 × 654.81
4. Step 4: Simplify right side
   1,178.79x = 1,065,192.52
5. Step 5: Solve for x
   x = 1,065,192.52/1,178.79
6. Step 6: Final answer
   x = 903.63