Finding the Fourth Proportional to 2,095.63, 3,138.95 and 1,105.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.63 : 3,138.95 = 1,105.31 : x
2. Step 2: Convert to fraction form
   2,095.63/3,138.95 = 1,105.31/x
3. Step 3: Cross multiply
   2,095.63x = 3,138.95 × 1,105.31
4. Step 4: Simplify right side
   2,095.63x = 3,469,515.59
5. Step 5: Solve for x
   x = 3,469,515.59/2,095.63
6. Step 6: Final answer
   x = 1,655.60