Finding the Fourth Proportional to 1,207,147.94, 1,665,239.49 and 819,983.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,207,147.94 : 1,665,239.49 = 819,983.30 : x
2. Step 2: Convert to fraction form
   1,207,147.94/1,665,239.49 = 819,983.30/x
3. Step 3: Cross multiply
   1,207,147.94x = 1,665,239.49 × 819,983.30
4. Step 4: Simplify right side
   1,207,147.94x = 1,365,468,572,300.52
5. Step 5: Solve for x
   x = 1,365,468,572,300.52/1,207,147.94
6. Step 6: Final answer
   x = 1,131,152.63