Finding the Fourth Proportional to 773,073.72, 1,066,805.72 and 428,905.99

Step by Step Solution

1. Step 1: Write the proportion equation
   773,073.72 : 1,066,805.72 = 428,905.99 : x
2. Step 2: Convert to fraction form
   773,073.72/1,066,805.72 = 428,905.99/x
3. Step 3: Cross multiply
   773,073.72x = 1,066,805.72 × 428,905.99
4. Step 4: Simplify right side
   773,073.72x = 457,559,357,064.56
5. Step 5: Solve for x
   x = 457,559,357,064.56/773,073.72
6. Step 6: Final answer
   x = 591,870.28