Finding the Fourth Proportional to 1,340,665.38, 2,010,570.72 and 441,939.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340,665.38 : 2,010,570.72 = 441,939.60 : x
2. Step 2: Convert to fraction form
   1,340,665.38/2,010,570.72 = 441,939.60/x
3. Step 3: Cross multiply
   1,340,665.38x = 2,010,570.72 × 441,939.60
4. Step 4: Simplify right side
   1,340,665.38x = 888,550,819,768.51
5. Step 5: Solve for x
   x = 888,550,819,768.51/1,340,665.38
6. Step 6: Final answer
   x = 662,768.53