Finding the Fourth Proportional to 1,105.23, 1,657.04 and 617.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.23 : 1,657.04 = 617.61 : x
2. Step 2: Convert to fraction form
   1,105.23/1,657.04 = 617.61/x
3. Step 3: Cross multiply
   1,105.23x = 1,657.04 × 617.61
4. Step 4: Simplify right side
   1,105.23x = 1,023,401.39
5. Step 5: Solve for x
   x = 1,023,401.39/1,105.23
6. Step 6: Final answer
   x = 925.96