Finding the Fourth Proportional to 3,819.39, 5,270.77 and 2,492.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,819.39 : 5,270.77 = 2,492.31 : x
2. Step 2: Convert to fraction form
   3,819.39/5,270.77 = 2,492.31/x
3. Step 3: Cross multiply
   3,819.39x = 5,270.77 × 2,492.31
4. Step 4: Simplify right side
   3,819.39x = 13,136,392.78
5. Step 5: Solve for x
   x = 13,136,392.78/3,819.39
6. Step 6: Final answer
   x = 3,439.40