Finding the Fourth Proportional to 2,275.63, 3,410.56 and 1,105.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.63 : 3,410.56 = 1,105.90 : x
2. Step 2: Convert to fraction form
   2,275.63/3,410.56 = 1,105.90/x
3. Step 3: Cross multiply
   2,275.63x = 3,410.56 × 1,105.90
4. Step 4: Simplify right side
   2,275.63x = 3,771,731.16
5. Step 5: Solve for x
   x = 3,771,731.16/2,275.63
6. Step 6: Final answer
   x = 1,657.45