Finding the Fourth Proportional to 1,158.84, 1,736.22 and 609.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.84 : 1,736.22 = 609.72 : x
2. Step 2: Convert to fraction form
   1,158.84/1,736.22 = 609.72/x
3. Step 3: Cross multiply
   1,158.84x = 1,736.22 × 609.72
4. Step 4: Simplify right side
   1,158.84x = 1,058,608.06
5. Step 5: Solve for x
   x = 1,058,608.06/1,158.84
6. Step 6: Final answer
   x = 913.51