Finding the Fourth Proportional to 1,412.88, 1,949.71 and 783.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.88 : 1,949.71 = 783.39 : x
2. Step 2: Convert to fraction form
   1,412.88/1,949.71 = 783.39/x
3. Step 3: Cross multiply
   1,412.88x = 1,949.71 × 783.39
4. Step 4: Simplify right side
   1,412.88x = 1,527,383.32
5. Step 5: Solve for x
   x = 1,527,383.32/1,412.88
6. Step 6: Final answer
   x = 1,081.04