Finding the Fourth Proportional to 1,105,743.72, 1,525,975.43 and 622,340.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,743.72 : 1,525,975.43 = 622,340.18 : x
2. Step 2: Convert to fraction form
   1,105,743.72/1,525,975.43 = 622,340.18/x
3. Step 3: Cross multiply
   1,105,743.72x = 1,525,975.43 × 622,340.18
4. Step 4: Simplify right side
   1,105,743.72x = 949,675,813,040.20
5. Step 5: Solve for x
   x = 949,675,813,040.20/1,105,743.72
6. Step 6: Final answer
   x = 858,857.07