Finding the Fourth Proportional to 2,575.88, 3,554.72 and 1,396.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.88 : 3,554.72 = 1,396.96 : x
2. Step 2: Convert to fraction form
   2,575.88/3,554.72 = 1,396.96/x
3. Step 3: Cross multiply
   2,575.88x = 3,554.72 × 1,396.96
4. Step 4: Simplify right side
   2,575.88x = 4,965,801.65
5. Step 5: Solve for x
   x = 4,965,801.65/2,575.88
6. Step 6: Final answer
   x = 1,927.81