Finding the Fourth Proportional to 2,405.02, 3,606.72 and 1,105.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.02 : 3,606.72 = 1,105.78 : x
2. Step 2: Convert to fraction form
   2,405.02/3,606.72 = 1,105.78/x
3. Step 3: Cross multiply
   2,405.02x = 3,606.72 × 1,105.78
4. Step 4: Simplify right side
   2,405.02x = 3,988,238.84
5. Step 5: Solve for x
   x = 3,988,238.84/2,405.02
6. Step 6: Final answer
   x = 1,658.30