Finding the Fourth Proportional to 2,571.78, 3,548.85 and 1,973.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,571.78 : 3,548.85 = 1,973.19 : x
2. Step 2: Convert to fraction form
   2,571.78/3,548.85 = 1,973.19/x
3. Step 3: Cross multiply
   2,571.78x = 3,548.85 × 1,973.19
4. Step 4: Simplify right side
   2,571.78x = 7,002,561.24
5. Step 5: Solve for x
   x = 7,002,561.24/2,571.78
6. Step 6: Final answer
   x = 2,722.84