Finding the Fourth Proportional to 1,055,786.25, 1,455,372.72 and 647,130.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055,786.25 : 1,455,372.72 = 647,130.72 : x
2. Step 2: Convert to fraction form
   1,055,786.25/1,455,372.72 = 647,130.72/x
3. Step 3: Cross multiply
   1,055,786.25x = 1,455,372.72 × 647,130.72
4. Step 4: Simplify right side
   1,055,786.25x = 941,816,396,161.96
5. Step 5: Solve for x
   x = 941,816,396,161.96/1,055,786.25
6. Step 6: Final answer
   x = 892,052.15