Finding the Fourth Proportional to 790,912.35, 1,091,453.56 and 428,327.91

Step by Step Solution

1. Step 1: Write the proportion equation
   790,912.35 : 1,091,453.56 = 428,327.91 : x
2. Step 2: Convert to fraction form
   790,912.35/1,091,453.56 = 428,327.91/x
3. Step 3: Cross multiply
   790,912.35x = 1,091,453.56 × 428,327.91
4. Step 4: Simplify right side
   790,912.35x = 467,500,021,146.04
5. Step 5: Solve for x
   x = 467,500,021,146.04/790,912.35
6. Step 6: Final answer
   x = 591,089.55