Finding the Fourth Proportional to 3,417.76, 5,127.28 and 1,108.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,417.76 : 5,127.28 = 1,108.96 : x
2. Step 2: Convert to fraction form
   3,417.76/5,127.28 = 1,108.96/x
3. Step 3: Cross multiply
   3,417.76x = 5,127.28 × 1,108.96
4. Step 4: Simplify right side
   3,417.76x = 5,685,948.43
5. Step 5: Solve for x
   x = 5,685,948.43/3,417.76
6. Step 6: Final answer
   x = 1,663.65