Finding the Fourth Proportional to 1,105.95, 1,526.24 and 608.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.95 : 1,526.24 = 608.61 : x
2. Step 2: Convert to fraction form
   1,105.95/1,526.24 = 608.61/x
3. Step 3: Cross multiply
   1,105.95x = 1,526.24 × 608.61
4. Step 4: Simplify right side
   1,105.95x = 928,892.17
5. Step 5: Solve for x
   x = 928,892.17/1,105.95
6. Step 6: Final answer
   x = 839.90