Finding the Fourth Proportional to 790,645.05, 1,091,076.89 and 428,065.97

Step by Step Solution

1. Step 1: Write the proportion equation
   790,645.05 : 1,091,076.89 = 428,065.97 : x
2. Step 2: Convert to fraction form
   790,645.05/1,091,076.89 = 428,065.97/x
3. Step 3: Cross multiply
   790,645.05x = 1,091,076.89 × 428,065.97
4. Step 4: Simplify right side
   790,645.05x = 467,052,879,666.72
5. Step 5: Solve for x
   x = 467,052,879,666.72/790,645.05
6. Step 6: Final answer
   x = 590,723.84