Finding the Fourth Proportional to 1,435,399.78, 1,981,138.56 and 823,965.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435,399.78 : 1,981,138.56 = 823,965.88 : x
2. Step 2: Convert to fraction form
   1,435,399.78/1,981,138.56 = 823,965.88/x
3. Step 3: Cross multiply
   1,435,399.78x = 1,981,138.56 × 823,965.88
4. Step 4: Simplify right side
   1,435,399.78x = 1,632,390,576,992.33
5. Step 5: Solve for x
   x = 1,632,390,576,992.33/1,435,399.78
6. Step 6: Final answer
   x = 1,137,237.58