Finding the Fourth Proportional to 1,198,851.31, 1,798,235.49 and 300,300.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198,851.31 : 1,798,235.49 = 300,300.79 : x
2. Step 2: Convert to fraction form
   1,198,851.31/1,798,235.49 = 300,300.79/x
3. Step 3: Cross multiply
   1,198,851.31x = 1,798,235.49 × 300,300.79
4. Step 4: Simplify right side
   1,198,851.31x = 540,011,538,253.04
5. Step 5: Solve for x
   x = 540,011,538,253.04/1,198,851.31
6. Step 6: Final answer
   x = 450,440.80