Finding the Fourth Proportional to 2,405.81, 3,605.96 and 1,090.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.81 : 3,605.96 = 1,090.56 : x
2. Step 2: Convert to fraction form
   2,405.81/3,605.96 = 1,090.56/x
3. Step 3: Cross multiply
   2,405.81x = 3,605.96 × 1,090.56
4. Step 4: Simplify right side
   2,405.81x = 3,932,510.28
5. Step 5: Solve for x
   x = 3,932,510.28/2,405.81
6. Step 6: Final answer
   x = 1,634.59