Finding the Fourth Proportional to 892,384.32, 1,339,067.52 and 386,949.12

Step by Step Solution

1. Step 1: Write the proportion equation
   892,384.32 : 1,339,067.52 = 386,949.12 : x
2. Step 2: Convert to fraction form
   892,384.32/1,339,067.52 = 386,949.12/x
3. Step 3: Cross multiply
   892,384.32x = 1,339,067.52 × 386,949.12
4. Step 4: Simplify right side
   892,384.32x = 518,150,998,484.58
5. Step 5: Solve for x
   x = 518,150,998,484.58/892,384.32
6. Step 6: Final answer
   x = 580,636.60