Finding the Fourth Proportional to 2,812.83, 4,219.29 and 1,272.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,812.83 : 4,219.29 = 1,272.03 : x
2. Step 2: Convert to fraction form
   2,812.83/4,219.29 = 1,272.03/x
3. Step 3: Cross multiply
   2,812.83x = 4,219.29 × 1,272.03
4. Step 4: Simplify right side
   2,812.83x = 5,367,063.46
5. Step 5: Solve for x
   x = 5,367,063.46/2,812.83
6. Step 6: Final answer
   x = 1,908.07