Finding the Fourth Proportional to 1,178.84, 1,626.82 and 654.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.84 : 1,626.82 = 654.90 : x
2. Step 2: Convert to fraction form
   1,178.84/1,626.82 = 654.90/x
3. Step 3: Cross multiply
   1,178.84x = 1,626.82 × 654.90
4. Step 4: Simplify right side
   1,178.84x = 1,065,404.42
5. Step 5: Solve for x
   x = 1,065,404.42/1,178.84
6. Step 6: Final answer
   x = 903.77