Finding the Fourth Proportional to 690,956, 953,757.92 and 404,568.16

Step by Step Solution

1. Step 1: Write the proportion equation
   690,956 : 953,757.92 = 404,568.16 : x
2. Step 2: Convert to fraction form
   690,956/953,757.92 = 404,568.16/x
3. Step 3: Cross multiply
   690,956x = 953,757.92 × 404,568.16
4. Step 4: Simplify right side
   690,956x = 385,860,086,779.83
5. Step 5: Solve for x
   x = 385,860,086,779.83/690,956
6. Step 6: Final answer
   x = 558,443.79