Finding the Fourth Proportional to 2,944.72, 4,416.72 and 1,213.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,944.72 : 4,416.72 = 1,213.12 : x
2. Step 2: Convert to fraction form
   2,944.72/4,416.72 = 1,213.12/x
3. Step 3: Cross multiply
   2,944.72x = 4,416.72 × 1,213.12
4. Step 4: Simplify right side
   2,944.72x = 5,358,011.37
5. Step 5: Solve for x
   x = 5,358,011.37/2,944.72
6. Step 6: Final answer
   x = 1,819.53