Finding the Fourth Proportional to 849,406.69, 1,274,109.58 and 309,703.38

Step by Step Solution

1. Step 1: Write the proportion equation
   849,406.69 : 1,274,109.58 = 309,703.38 : x
2. Step 2: Convert to fraction form
   849,406.69/1,274,109.58 = 309,703.38/x
3. Step 3: Cross multiply
   849,406.69x = 1,274,109.58 × 309,703.38
4. Step 4: Simplify right side
   849,406.69x = 394,596,048,033.82
5. Step 5: Solve for x
   x = 394,596,048,033.82/849,406.69
6. Step 6: Final answer
   x = 464,554.91