Finding the Fourth Proportional to 2,275.04, 3,409.67 and 1,105.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.04 : 3,409.67 = 1,105.31 : x
2. Step 2: Convert to fraction form
   2,275.04/3,409.67 = 1,105.31/x
3. Step 3: Cross multiply
   2,275.04x = 3,409.67 × 1,105.31
4. Step 4: Simplify right side
   2,275.04x = 3,768,725.30
5. Step 5: Solve for x
   x = 3,768,725.30/2,275.04
6. Step 6: Final answer
   x = 1,656.56