Finding the Fourth Proportional to 1,105.55, 1,525.61 and 608.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.55 : 1,525.61 = 608.18 : x
2. Step 2: Convert to fraction form
   1,105.55/1,525.61 = 608.18/x
3. Step 3: Cross multiply
   1,105.55x = 1,525.61 × 608.18
4. Step 4: Simplify right side
   1,105.55x = 927,845.49
5. Step 5: Solve for x
   x = 927,845.49/1,105.55
6. Step 6: Final answer
   x = 839.26