Finding the Fourth Proportional to 2,405.81, 3,607.83 and 1,235.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.81 : 3,607.83 = 1,235.42 : x
2. Step 2: Convert to fraction form
   2,405.81/3,607.83 = 1,235.42/x
3. Step 3: Cross multiply
   2,405.81x = 3,607.83 × 1,235.42
4. Step 4: Simplify right side
   2,405.81x = 4,457,185.34
5. Step 5: Solve for x
   x = 4,457,185.34/2,405.81
6. Step 6: Final answer
   x = 1,852.68