Finding the Fourth Proportional to 2,575.76, 3,554.54 and 1,396.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.76 : 3,554.54 = 1,396.82 : x
2. Step 2: Convert to fraction form
   2,575.76/3,554.54 = 1,396.82/x
3. Step 3: Cross multiply
   2,575.76x = 3,554.54 × 1,396.82
4. Step 4: Simplify right side
   2,575.76x = 4,965,052.56
5. Step 5: Solve for x
   x = 4,965,052.56/2,575.76
6. Step 6: Final answer
   x = 1,927.61