Finding the Fourth Proportional to 1,138,969.61, 1,571,780.89 and 622,756.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138,969.61 : 1,571,780.89 = 622,756.82 : x
2. Step 2: Convert to fraction form
   1,138,969.61/1,571,780.89 = 622,756.82/x
3. Step 3: Cross multiply
   1,138,969.61x = 1,571,780.89 × 622,756.82
4. Step 4: Simplify right side
   1,138,969.61x = 978,837,263,677.44
5. Step 5: Solve for x
   x = 978,837,263,677.44/1,138,969.61
6. Step 6: Final answer
   x = 859,405.95