Finding the Fourth Proportional to 680,947.30, 1,018,796.55 and 444,751.30

Step by Step Solution

1. Step 1: Write the proportion equation
   680,947.30 : 1,018,796.55 = 444,751.30 : x
2. Step 2: Convert to fraction form
   680,947.30/1,018,796.55 = 444,751.30/x
3. Step 3: Cross multiply
   680,947.30x = 1,018,796.55 × 444,751.30
4. Step 4: Simplify right side
   680,947.30x = 453,111,090,048.02
5. Step 5: Solve for x
   x = 453,111,090,048.02/680,947.30
6. Step 6: Final answer
   x = 665,412.86