Finding the Fourth Proportional to 2,838.36, 4,254.30 and 1,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,838.36 : 4,254.30 = 1,105.50 : x
2. Step 2: Convert to fraction form
   2,838.36/4,254.30 = 1,105.50/x
3. Step 3: Cross multiply
   2,838.36x = 4,254.30 × 1,105.50
4. Step 4: Simplify right side
   2,838.36x = 4,703,128.65
5. Step 5: Solve for x
   x = 4,703,128.65/2,838.36
6. Step 6: Final answer
   x = 1,656.99