Finding the Fourth Proportional to 2,575.25, 3,553.84 and 1,396.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.25 : 3,553.84 = 1,396.31 : x
2. Step 2: Convert to fraction form
   2,575.25/3,553.84 = 1,396.31/x
3. Step 3: Cross multiply
   2,575.25x = 3,553.84 × 1,396.31
4. Step 4: Simplify right side
   2,575.25x = 4,962,267.72
5. Step 5: Solve for x
   x = 4,962,267.72/2,575.25
6. Step 6: Final answer
   x = 1,926.91