Finding the Fourth Proportional to 2,970.72, 4,449.60 and 1,812.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,970.72 : 4,449.60 = 1,812.96 : x
2. Step 2: Convert to fraction form
   2,970.72/4,449.60 = 1,812.96/x
3. Step 3: Cross multiply
   2,970.72x = 4,449.60 × 1,812.96
4. Step 4: Simplify right side
   2,970.72x = 8,066,946.82
5. Step 5: Solve for x
   x = 8,066,946.82/2,970.72
6. Step 6: Final answer
   x = 2,715.49