Finding the Fourth Proportional to 790,945.61, 1,091,499.52 and 428,361.18

Step by Step Solution

1. Step 1: Write the proportion equation
   790,945.61 : 1,091,499.52 = 428,361.18 : x
2. Step 2: Convert to fraction form
   790,945.61/1,091,499.52 = 428,361.18/x
3. Step 3: Cross multiply
   790,945.61x = 1,091,499.52 × 428,361.18
4. Step 4: Simplify right side
   790,945.61x = 467,556,017,995.79
5. Step 5: Solve for x
   x = 467,556,017,995.79/790,945.61
6. Step 6: Final answer
   x = 591,135.49