Finding the Fourth Proportional to 2,031.15, 3,042.68 and 1,105.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.15 : 3,042.68 = 1,105.32 : x
2. Step 2: Convert to fraction form
   2,031.15/3,042.68 = 1,105.32/x
3. Step 3: Cross multiply
   2,031.15x = 3,042.68 × 1,105.32
4. Step 4: Simplify right side
   2,031.15x = 3,363,129.53
5. Step 5: Solve for x
   x = 3,363,129.53/2,031.15
6. Step 6: Final answer
   x = 1,655.78