Finding the Fourth Proportional to 1,400.43, 1,932.69 and 770.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.43 : 1,932.69 = 770.98 : x
2. Step 2: Convert to fraction form
   1,400.43/1,932.69 = 770.98/x
3. Step 3: Cross multiply
   1,400.43x = 1,932.69 × 770.98
4. Step 4: Simplify right side
   1,400.43x = 1,490,067.26
5. Step 5: Solve for x
   x = 1,490,067.26/1,400.43
6. Step 6: Final answer
   x = 1,064.01