Finding the Fourth Proportional to 1,138,907.74, 1,571,699.82 and 622,662.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138,907.74 : 1,571,699.82 = 622,662.82 : x
2. Step 2: Convert to fraction form
   1,138,907.74/1,571,699.82 = 622,662.82/x
3. Step 3: Cross multiply
   1,138,907.74x = 1,571,699.82 × 622,662.82
4. Step 4: Simplify right side
   1,138,907.74x = 978,639,042,114.69
5. Step 5: Solve for x
   x = 978,639,042,114.69/1,138,907.74
6. Step 6: Final answer
   x = 859,278.59