Finding the Fourth Proportional to 1,412.83, 1,949.52 and 783.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.83 : 1,949.52 = 783.28 : x
2. Step 2: Convert to fraction form
   1,412.83/1,949.52 = 783.28/x
3. Step 3: Cross multiply
   1,412.83x = 1,949.52 × 783.28
4. Step 4: Simplify right side
   1,412.83x = 1,527,020.03
5. Step 5: Solve for x
   x = 1,527,020.03/1,412.83
6. Step 6: Final answer
   x = 1,080.82