Finding the Fourth Proportional to 1,181.79, 1,771.59 and 488.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.79 : 1,771.59 = 488.04 : x
2. Step 2: Convert to fraction form
   1,181.79/1,771.59 = 488.04/x
3. Step 3: Cross multiply
   1,181.79x = 1,771.59 × 488.04
4. Step 4: Simplify right side
   1,181.79x = 864,606.78
5. Step 5: Solve for x
   x = 864,606.78/1,181.79
6. Step 6: Final answer
   x = 731.61