Finding the Fourth Proportional to 1,078,740.30, 1,616,814.45 and 447,329.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,740.30 : 1,616,814.45 = 447,329.10 : x
2. Step 2: Convert to fraction form
   1,078,740.30/1,616,814.45 = 447,329.10/x
3. Step 3: Cross multiply
   1,078,740.30x = 1,616,814.45 × 447,329.10
4. Step 4: Simplify right side
   1,078,740.30x = 723,248,152,785.50
5. Step 5: Solve for x
   x = 723,248,152,785.50/1,078,740.30
6. Step 6: Final answer
   x = 670,456.23