Finding the Fourth Proportional to 1,205,773.50, 1,808,826.06 and 447,550.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205,773.50 : 1,808,826.06 = 447,550.56 : x
2. Step 2: Convert to fraction form
   1,205,773.50/1,808,826.06 = 447,550.56/x
3. Step 3: Cross multiply
   1,205,773.50x = 1,808,826.06 × 447,550.56
4. Step 4: Simplify right side
   1,205,773.50x = 809,541,116,095.59
5. Step 5: Solve for x
   x = 809,541,116,095.59/1,205,773.50
6. Step 6: Final answer
   x = 671,387.38