Finding the Fourth Proportional to 1,083.72, 1,495.54 and 617.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.72 : 1,495.54 = 617.96 : x
2. Step 2: Convert to fraction form
   1,083.72/1,495.54 = 617.96/x
3. Step 3: Cross multiply
   1,083.72x = 1,495.54 × 617.96
4. Step 4: Simplify right side
   1,083.72x = 924,183.90
5. Step 5: Solve for x
   x = 924,183.90/1,083.72
6. Step 6: Final answer
   x = 852.79