Finding the Fourth Proportional to 1,151,940.38, 1,726,509.72 and 815,078.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151,940.38 : 1,726,509.72 = 815,078.12 : x
2. Step 2: Convert to fraction form
   1,151,940.38/1,726,509.72 = 815,078.12/x
3. Step 3: Cross multiply
   1,151,940.38x = 1,726,509.72 × 815,078.12
4. Step 4: Simplify right side
   1,151,940.38x = 1,407,240,296,739.33
5. Step 5: Solve for x
   x = 1,407,240,296,739.33/1,151,940.38
6. Step 6: Final answer
   x = 1,221,625.98