Finding the Fourth Proportional to 1,178.30, 1,626.15 and 654.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.30 : 1,626.15 = 654.50 : x
2. Step 2: Convert to fraction form
   1,178.30/1,626.15 = 654.50/x
3. Step 3: Cross multiply
   1,178.30x = 1,626.15 × 654.50
4. Step 4: Simplify right side
   1,178.30x = 1,064,315.18
5. Step 5: Solve for x
   x = 1,064,315.18/1,178.30
6. Step 6: Final answer
   x = 903.26