Finding the Fourth Proportional to 1,105.59, 1,525.73 and 608.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.59 : 1,525.73 = 608.28 : x
2. Step 2: Convert to fraction form
   1,105.59/1,525.73 = 608.28/x
3. Step 3: Cross multiply
   1,105.59x = 1,525.73 × 608.28
4. Step 4: Simplify right side
   1,105.59x = 928,068.00
5. Step 5: Solve for x
   x = 928,068.00/1,105.59
6. Step 6: Final answer
   x = 839.43