Finding the Fourth Proportional to 1,105.92, 1,526.17 and 608.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.92 : 1,526.17 = 608.57 : x
2. Step 2: Convert to fraction form
   1,105.92/1,526.17 = 608.57/x
3. Step 3: Cross multiply
   1,105.92x = 1,526.17 × 608.57
4. Step 4: Simplify right side
   1,105.92x = 928,781.28
5. Step 5: Solve for x
   x = 928,781.28/1,105.92
6. Step 6: Final answer
   x = 839.83