Finding the Fourth Proportional to 1,178.38, 1,626.01 and 654.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.38 : 1,626.01 = 654.31 : x
2. Step 2: Convert to fraction form
   1,178.38/1,626.01 = 654.31/x
3. Step 3: Cross multiply
   1,178.38x = 1,626.01 × 654.31
4. Step 4: Simplify right side
   1,178.38x = 1,063,914.60
5. Step 5: Solve for x
   x = 1,063,914.60/1,178.38
6. Step 6: Final answer
   x = 902.86