Finding the Fourth Proportional to 2,549.49, 3,824.22 and 1,319.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,549.49 : 3,824.22 = 1,319.31 : x
2. Step 2: Convert to fraction form
   2,549.49/3,824.22 = 1,319.31/x
3. Step 3: Cross multiply
   2,549.49x = 3,824.22 × 1,319.31
4. Step 4: Simplify right side
   2,549.49x = 5,045,331.69
5. Step 5: Solve for x
   x = 5,045,331.69/2,549.49
6. Step 6: Final answer
   x = 1,978.96