Finding the Fourth Proportional to 676,570.84, 933,667.67 and 404,638.69

Step by Step Solution

1. Step 1: Write the proportion equation
   676,570.84 : 933,667.67 = 404,638.69 : x
2. Step 2: Convert to fraction form
   676,570.84/933,667.67 = 404,638.69/x
3. Step 3: Cross multiply
   676,570.84x = 933,667.67 × 404,638.69
4. Step 4: Simplify right side
   676,570.84x = 377,798,062,884.15
5. Step 5: Solve for x
   x = 377,798,062,884.15/676,570.84
6. Step 6: Final answer
   x = 558,401.34