Finding the Fourth Proportional to 2,949.45, 4,421.43 and 2,786.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,949.45 : 4,421.43 = 2,786.34 : x
2. Step 2: Convert to fraction form
   2,949.45/4,421.43 = 2,786.34/x
3. Step 3: Cross multiply
   2,949.45x = 4,421.43 × 2,786.34
4. Step 4: Simplify right side
   2,949.45x = 12,319,607.27
5. Step 5: Solve for x
   x = 12,319,607.27/2,949.45
6. Step 6: Final answer
   x = 4,176.92