Finding the Fourth Proportional to 1,178.96, 1,626.86 and 654.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.96 : 1,626.86 = 654.98 : x
2. Step 2: Convert to fraction form
   1,178.96/1,626.86 = 654.98/x
3. Step 3: Cross multiply
   1,178.96x = 1,626.86 × 654.98
4. Step 4: Simplify right side
   1,178.96x = 1,065,554.27
5. Step 5: Solve for x
   x = 1,065,554.27/1,178.96
6. Step 6: Final answer
   x = 903.81