Finding the Fourth Proportional to 1,105.65, 1,525.77 and 608.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.65 : 1,525.77 = 608.29 : x
2. Step 2: Convert to fraction form
   1,105.65/1,525.77 = 608.29/x
3. Step 3: Cross multiply
   1,105.65x = 1,525.77 × 608.29
4. Step 4: Simplify right side
   1,105.65x = 928,113.69
5. Step 5: Solve for x
   x = 928,113.69/1,105.65
6. Step 6: Final answer
   x = 839.43