Finding the Fourth Proportional to 1,105.83, 1,525.98 and 608.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.83 : 1,525.98 = 608.49 : x
2. Step 2: Convert to fraction form
   1,105.83/1,525.98 = 608.49/x
3. Step 3: Cross multiply
   1,105.83x = 1,525.98 × 608.49
4. Step 4: Simplify right side
   1,105.83x = 928,543.57
5. Step 5: Solve for x
   x = 928,543.57/1,105.83
6. Step 6: Final answer
   x = 839.68