Finding the Fourth Proportional to 957,648.72, 1,321,488.98 and 538,607.22

Step by Step Solution

1. Step 1: Write the proportion equation
   957,648.72 : 1,321,488.98 = 538,607.22 : x
2. Step 2: Convert to fraction form
   957,648.72/1,321,488.98 = 538,607.22/x
3. Step 3: Cross multiply
   957,648.72x = 1,321,488.98 × 538,607.22
4. Step 4: Simplify right side
   957,648.72x = 711,763,507,582.97
5. Step 5: Solve for x
   x = 711,763,507,582.97/957,648.72
6. Step 6: Final answer
   x = 743,240.70