Finding the Fourth Proportional to 1,412.58, 1,949.43 and 783.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.58 : 1,949.43 = 783.18 : x
2. Step 2: Convert to fraction form
   1,412.58/1,949.43 = 783.18/x
3. Step 3: Cross multiply
   1,412.58x = 1,949.43 × 783.18
4. Step 4: Simplify right side
   1,412.58x = 1,526,754.59
5. Step 5: Solve for x
   x = 1,526,754.59/1,412.58
6. Step 6: Final answer
   x = 1,080.83