Finding the Fourth Proportional to 619,451.82, 854,843.83 and 361,506.11

Step by Step Solution

1. Step 1: Write the proportion equation
   619,451.82 : 854,843.83 = 361,506.11 : x
2. Step 2: Convert to fraction form
   619,451.82/854,843.83 = 361,506.11/x
3. Step 3: Cross multiply
   619,451.82x = 854,843.83 × 361,506.11
4. Step 4: Simplify right side
   619,451.82x = 309,031,262,462.82
5. Step 5: Solve for x
   x = 309,031,262,462.82/619,451.82
6. Step 6: Final answer
   x = 498,878.61