Finding the Fourth Proportional to 1,178.83, 1,626.71 and 654.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.83 : 1,626.71 = 654.87 : x
2. Step 2: Convert to fraction form
   1,178.83/1,626.71 = 654.87/x
3. Step 3: Cross multiply
   1,178.83x = 1,626.71 × 654.87
4. Step 4: Simplify right side
   1,178.83x = 1,065,283.58
5. Step 5: Solve for x
   x = 1,065,283.58/1,178.83
6. Step 6: Final answer
   x = 903.68