Finding the Fourth Proportional to 2,854.42, 4,282.47 and 906.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,854.42 : 4,282.47 = 906.58 : x
2. Step 2: Convert to fraction form
   2,854.42/4,282.47 = 906.58/x
3. Step 3: Cross multiply
   2,854.42x = 4,282.47 × 906.58
4. Step 4: Simplify right side
   2,854.42x = 3,882,401.65
5. Step 5: Solve for x
   x = 3,882,401.65/2,854.42
6. Step 6: Final answer
   x = 1,360.14