Finding the Fourth Proportional to 2,838.47, 4,260.15 and 1,108.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,838.47 : 4,260.15 = 1,108.31 : x
2. Step 2: Convert to fraction form
   2,838.47/4,260.15 = 1,108.31/x
3. Step 3: Cross multiply
   2,838.47x = 4,260.15 × 1,108.31
4. Step 4: Simplify right side
   2,838.47x = 4,721,566.85
5. Step 5: Solve for x
   x = 4,721,566.85/2,838.47
6. Step 6: Final answer
   x = 1,663.42