Finding the Fourth Proportional to 2,409.41, 3,612.89 and 1,109.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,409.41 : 3,612.89 = 1,109.75 : x
2. Step 2: Convert to fraction form
   2,409.41/3,612.89 = 1,109.75/x
3. Step 3: Cross multiply
   2,409.41x = 3,612.89 × 1,109.75
4. Step 4: Simplify right side
   2,409.41x = 4,009,399.13
5. Step 5: Solve for x
   x = 4,009,399.13/2,409.41
6. Step 6: Final answer
   x = 1,664.06