Finding the Fourth Proportional to 1,105.47, 1,525.56 and 608.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.47 : 1,525.56 = 608.12 : x
2. Step 2: Convert to fraction form
   1,105.47/1,525.56 = 608.12/x
3. Step 3: Cross multiply
   1,105.47x = 1,525.56 × 608.12
4. Step 4: Simplify right side
   1,105.47x = 927,727.36
5. Step 5: Solve for x
   x = 927,727.36/1,105.47
6. Step 6: Final answer
   x = 839.22