Finding the Fourth Proportional to 2,806.58, 4,213.59 and 2,398.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,806.58 : 4,213.59 = 2,398.34 : x
2. Step 2: Convert to fraction form
   2,806.58/4,213.59 = 2,398.34/x
3. Step 3: Cross multiply
   2,806.58x = 4,213.59 × 2,398.34
4. Step 4: Simplify right side
   2,806.58x = 10,105,621.44
5. Step 5: Solve for x
   x = 10,105,621.44/2,806.58
6. Step 6: Final answer
   x = 3,600.69