Finding the Fourth Proportional to 2,864.42, 4,262.32 and 2,854.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,864.42 : 4,262.32 = 2,854.70 : x
2. Step 2: Convert to fraction form
   2,864.42/4,262.32 = 2,854.70/x
3. Step 3: Cross multiply
   2,864.42x = 4,262.32 × 2,854.70
4. Step 4: Simplify right side
   2,864.42x = 12,167,644.90
5. Step 5: Solve for x
   x = 12,167,644.90/2,864.42
6. Step 6: Final answer
   x = 4,247.86