Finding the Fourth Proportional to 2,561.49, 3,839.10 and 1,448.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.49 : 3,839.10 = 1,448.15 : x
2. Step 2: Convert to fraction form
   2,561.49/3,839.10 = 1,448.15/x
3. Step 3: Cross multiply
   2,561.49x = 3,839.10 × 1,448.15
4. Step 4: Simplify right side
   2,561.49x = 5,559,573.47
5. Step 5: Solve for x
   x = 5,559,573.47/2,561.49
6. Step 6: Final answer
   x = 2,170.45