Finding the Fourth Proportional to 3,404.31, 5,105.16 and 1,324.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,404.31 : 5,105.16 = 1,324.05 : x
2. Step 2: Convert to fraction form
   3,404.31/5,105.16 = 1,324.05/x
3. Step 3: Cross multiply
   3,404.31x = 5,105.16 × 1,324.05
4. Step 4: Simplify right side
   3,404.31x = 6,759,467.95
5. Step 5: Solve for x
   x = 6,759,467.95/3,404.31
6. Step 6: Final answer
   x = 1,985.56