Finding the Fourth Proportional to 772,253.82, 1,065,656.52 and 428,086.44

Step by Step Solution

1. Step 1: Write the proportion equation
   772,253.82 : 1,065,656.52 = 428,086.44 : x
2. Step 2: Convert to fraction form
   772,253.82/1,065,656.52 = 428,086.44/x
3. Step 3: Cross multiply
   772,253.82x = 1,065,656.52 × 428,086.44
4. Step 4: Simplify right side
   772,253.82x = 456,193,105,909.59
5. Step 5: Solve for x
   x = 456,193,105,909.59/772,253.82
6. Step 6: Final answer
   x = 590,729.49