Finding the Fourth Proportional to 619,103.32, 854,544 and 404,276.74

Step by Step Solution

1. Step 1: Write the proportion equation
   619,103.32 : 854,544 = 404,276.74 : x
2. Step 2: Convert to fraction form
   619,103.32/854,544 = 404,276.74/x
3. Step 3: Cross multiply
   619,103.32x = 854,544 × 404,276.74
4. Step 4: Simplify right side
   619,103.32x = 345,472,262,506.56
5. Step 5: Solve for x
   x = 345,472,262,506.56/619,103.32
6. Step 6: Final answer
   x = 558,020.37