Finding the Fourth Proportional to 777,250.72, 1,072,608.22 and 450,627.21

Step by Step Solution

1. Step 1: Write the proportion equation
   777,250.72 : 1,072,608.22 = 450,627.21 : x
2. Step 2: Convert to fraction form
   777,250.72/1,072,608.22 = 450,627.21/x
3. Step 3: Cross multiply
   777,250.72x = 1,072,608.22 × 450,627.21
4. Step 4: Simplify right side
   777,250.72x = 483,346,443,607.89
5. Step 5: Solve for x
   x = 483,346,443,607.89/777,250.72
6. Step 6: Final answer
   x = 621,866.83