Finding the Fourth Proportional to 693,522.02, 1,040,302.47 and 338,819.78

Step by Step Solution

1. Step 1: Write the proportion equation
   693,522.02 : 1,040,302.47 = 338,819.78 : x
2. Step 2: Convert to fraction form
   693,522.02/1,040,302.47 = 338,819.78/x
3. Step 3: Cross multiply
   693,522.02x = 1,040,302.47 × 338,819.78
4. Step 4: Simplify right side
   693,522.02x = 352,475,054,018.86
5. Step 5: Solve for x
   x = 352,475,054,018.86/693,522.02
6. Step 6: Final answer
   x = 508,239.17