Finding the Fourth Proportional to 2,405.98, 3,604.16 and 1,105.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.98 : 3,604.16 = 1,105.66 : x
2. Step 2: Convert to fraction form
   2,405.98/3,604.16 = 1,105.66/x
3. Step 3: Cross multiply
   2,405.98x = 3,604.16 × 1,105.66
4. Step 4: Simplify right side
   2,405.98x = 3,984,975.55
5. Step 5: Solve for x
   x = 3,984,975.55/2,405.98
6. Step 6: Final answer
   x = 1,656.28