Finding the Fourth Proportional to 607,721.82, 909,269.82 and 366,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   607,721.82 : 909,269.82 = 366,949.50 : x
2. Step 2: Convert to fraction form
   607,721.82/909,269.82 = 366,949.50/x
3. Step 3: Cross multiply
   607,721.82x = 909,269.82 × 366,949.50
4. Step 4: Simplify right side
   607,721.82x = 333,656,105,814.09
5. Step 5: Solve for x
   x = 333,656,105,814.09/607,721.82
6. Step 6: Final answer
   x = 549,027.69