Finding the Fourth Proportional to 1,105,563.47, 1,525,659.72 and 622,128.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,563.47 : 1,525,659.72 = 622,128.34 : x
2. Step 2: Convert to fraction form
   1,105,563.47/1,525,659.72 = 622,128.34/x
3. Step 3: Cross multiply
   1,105,563.47x = 1,525,659.72 × 622,128.34
4. Step 4: Simplify right side
   1,105,563.47x = 949,156,141,380.17
5. Step 5: Solve for x
   x = 949,156,141,380.17/1,105,563.47
6. Step 6: Final answer
   x = 858,527.05