Finding the Fourth Proportional to 772,735.82, 1,066,359.54 and 428,516.20

Step by Step Solution

1. Step 1: Write the proportion equation
   772,735.82 : 1,066,359.54 = 428,516.20 : x
2. Step 2: Convert to fraction form
   772,735.82/1,066,359.54 = 428,516.20/x
3. Step 3: Cross multiply
   772,735.82x = 1,066,359.54 × 428,516.20
4. Step 4: Simplify right side
   772,735.82x = 456,952,337,914.55
5. Step 5: Solve for x
   x = 456,952,337,914.55/772,735.82
6. Step 6: Final answer
   x = 591,343.55