Finding the Fourth Proportional to 1,105.40, 1,525.41 and 608.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.40 : 1,525.41 = 608.04 : x
2. Step 2: Convert to fraction form
   1,105.40/1,525.41 = 608.04/x
3. Step 3: Cross multiply
   1,105.40x = 1,525.41 × 608.04
4. Step 4: Simplify right side
   1,105.40x = 927,510.30
5. Step 5: Solve for x
   x = 927,510.30/1,105.40
6. Step 6: Final answer
   x = 839.07