Finding the Fourth Proportional to 1,178.41, 1,626.06 and 654.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.41 : 1,626.06 = 654.31 : x
2. Step 2: Convert to fraction form
   1,178.41/1,626.06 = 654.31/x
3. Step 3: Cross multiply
   1,178.41x = 1,626.06 × 654.31
4. Step 4: Simplify right side
   1,178.41x = 1,063,947.32
5. Step 5: Solve for x
   x = 1,063,947.32/1,178.41
6. Step 6: Final answer
   x = 902.87