Finding the Fourth Proportional to 772,114.65, 1,065,581.98 and 428,058.48

Step by Step Solution

1. Step 1: Write the proportion equation
   772,114.65 : 1,065,581.98 = 428,058.48 : x
2. Step 2: Convert to fraction form
   772,114.65/1,065,581.98 = 428,058.48/x
3. Step 3: Cross multiply
   772,114.65x = 1,065,581.98 × 428,058.48
4. Step 4: Simplify right side
   772,114.65x = 456,131,408,007.81
5. Step 5: Solve for x
   x = 456,131,408,007.81/772,114.65
6. Step 6: Final answer
   x = 590,756.06