Finding the Fourth Proportional to 2,415.07, 3,622.89 and 854.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.07 : 3,622.89 = 854.75 : x
2. Step 2: Convert to fraction form
   2,415.07/3,622.89 = 854.75/x
3. Step 3: Cross multiply
   2,415.07x = 3,622.89 × 854.75
4. Step 4: Simplify right side
   2,415.07x = 3,096,665.23
5. Step 5: Solve for x
   x = 3,096,665.23/2,415.07
6. Step 6: Final answer
   x = 1,282.23