Finding the Fourth Proportional to 993,007.56, 1,488,910.86 and 445,800.72

Step by Step Solution

1. Step 1: Write the proportion equation
   993,007.56 : 1,488,910.86 = 445,800.72 : x
2. Step 2: Convert to fraction form
   993,007.56/1,488,910.86 = 445,800.72/x
3. Step 3: Cross multiply
   993,007.56x = 1,488,910.86 × 445,800.72
4. Step 4: Simplify right side
   993,007.56x = 663,757,533,403.82
5. Step 5: Solve for x
   x = 663,757,533,403.82/993,007.56
6. Step 6: Final answer
   x = 668,431.50