Finding the Fourth Proportional to 790,956.69, 1,091,514.78 and 428,372.25

Step by Step Solution

1. Step 1: Write the proportion equation
   790,956.69 : 1,091,514.78 = 428,372.25 : x
2. Step 2: Convert to fraction form
   790,956.69/1,091,514.78 = 428,372.25/x
3. Step 3: Cross multiply
   790,956.69x = 1,091,514.78 × 428,372.25
4. Step 4: Simplify right side
   790,956.69x = 467,574,642,216.86
5. Step 5: Solve for x
   x = 467,574,642,216.86/790,956.69
6. Step 6: Final answer
   x = 591,150.75