Finding the Fourth Proportional to 2,575.89, 3,864.14 and 909.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.89 : 3,864.14 = 909.67 : x
2. Step 2: Convert to fraction form
   2,575.89/3,864.14 = 909.67/x
3. Step 3: Cross multiply
   2,575.89x = 3,864.14 × 909.67
4. Step 4: Simplify right side
   2,575.89x = 3,515,104.67
5. Step 5: Solve for x
   x = 3,515,104.67/2,575.89
6. Step 6: Final answer
   x = 1,364.62