Finding the Fourth Proportional to 1,178.55, 1,626.38 and 654.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.55 : 1,626.38 = 654.58 : x
2. Step 2: Convert to fraction form
   1,178.55/1,626.38 = 654.58/x
3. Step 3: Cross multiply
   1,178.55x = 1,626.38 × 654.58
4. Step 4: Simplify right side
   1,178.55x = 1,064,595.82
5. Step 5: Solve for x
   x = 1,064,595.82/1,178.55
6. Step 6: Final answer
   x = 903.31