Finding the Fourth Proportional to 619,055.34, 854,299.35 and 404,068.38

Step by Step Solution

1. Step 1: Write the proportion equation
   619,055.34 : 854,299.35 = 404,068.38 : x
2. Step 2: Convert to fraction form
   619,055.34/854,299.35 = 404,068.38/x
3. Step 3: Cross multiply
   619,055.34x = 854,299.35 × 404,068.38
4. Step 4: Simplify right side
   619,055.34x = 345,195,354,389.55
5. Step 5: Solve for x
   x = 345,195,354,389.55/619,055.34
6. Step 6: Final answer
   x = 557,616.31