Finding the Fourth Proportional to 580,167.78, 800,666.82 and 386,240.82

Step by Step Solution

1. Step 1: Write the proportion equation
   580,167.78 : 800,666.82 = 386,240.82 : x
2. Step 2: Convert to fraction form
   580,167.78/800,666.82 = 386,240.82/x
3. Step 3: Cross multiply
   580,167.78x = 800,666.82 × 386,240.82
4. Step 4: Simplify right side
   580,167.78x = 309,250,209,103.59
5. Step 5: Solve for x
   x = 309,250,209,103.59/580,167.78
6. Step 6: Final answer
   x = 533,035.82