Finding the Fourth Proportional to 2,057.77, 2,840.25 and 1,271.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.77 : 2,840.25 = 1,271.37 : x
2. Step 2: Convert to fraction form
   2,057.77/2,840.25 = 1,271.37/x
3. Step 3: Cross multiply
   2,057.77x = 2,840.25 × 1,271.37
4. Step 4: Simplify right side
   2,057.77x = 3,611,008.64
5. Step 5: Solve for x
   x = 3,611,008.64/2,057.77
6. Step 6: Final answer
   x = 1,754.82