Finding the Fourth Proportional to 2,812.18, 4,213.20 and 1,348.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,812.18 : 4,213.20 = 1,348.10 : x
2. Step 2: Convert to fraction form
   2,812.18/4,213.20 = 1,348.10/x
3. Step 3: Cross multiply
   2,812.18x = 4,213.20 × 1,348.10
4. Step 4: Simplify right side
   2,812.18x = 5,679,814.92
5. Step 5: Solve for x
   x = 5,679,814.92/2,812.18
6. Step 6: Final answer
   x = 2,019.72