Finding the Fourth Proportional to 705,190.56, 1,057,822.78 and 536,974.72

Step by Step Solution

1. Step 1: Write the proportion equation
   705,190.56 : 1,057,822.78 = 536,974.72 : x
2. Step 2: Convert to fraction form
   705,190.56/1,057,822.78 = 536,974.72/x
3. Step 3: Cross multiply
   705,190.56x = 1,057,822.78 × 536,974.72
4. Step 4: Simplify right side
   705,190.56x = 568,024,091,100.12
5. Step 5: Solve for x
   x = 568,024,091,100.12/705,190.56
6. Step 6: Final answer
   x = 805,490.21