Finding the Fourth Proportional to 1,420,665.72, 2,131,839.33 and 522,738.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420,665.72 : 2,131,839.33 = 522,738.02 : x
2. Step 2: Convert to fraction form
   1,420,665.72/2,131,839.33 = 522,738.02/x
3. Step 3: Cross multiply
   1,420,665.72x = 2,131,839.33 × 522,738.02
4. Step 4: Simplify right side
   1,420,665.72x = 1,114,393,474,567.40
5. Step 5: Solve for x
   x = 1,114,393,474,567.40/1,420,665.72
6. Step 6: Final answer
   x = 784,416.39