Finding the Fourth Proportional to 1,430,760.69, 1,974,559.60 and 819,105.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430,760.69 : 1,974,559.60 = 819,105.31 : x
2. Step 2: Convert to fraction form
   1,430,760.69/1,974,559.60 = 819,105.31/x
3. Step 3: Cross multiply
   1,430,760.69x = 1,974,559.60 × 819,105.31
4. Step 4: Simplify right side
   1,430,760.69x = 1,617,372,259,067.29
5. Step 5: Solve for x
   x = 1,617,372,259,067.29/1,430,760.69
6. Step 6: Final answer
   x = 1,130,428.22