Finding the Fourth Proportional to 1,400.27, 1,932.43 and 770.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.27 : 1,932.43 = 770.83 : x
2. Step 2: Convert to fraction form
   1,400.27/1,932.43 = 770.83/x
3. Step 3: Cross multiply
   1,400.27x = 1,932.43 × 770.83
4. Step 4: Simplify right side
   1,400.27x = 1,489,571.16
5. Step 5: Solve for x
   x = 1,489,571.16/1,400.27
6. Step 6: Final answer
   x = 1,063.77