Finding the Fourth Proportional to 901,809, 1,244,535.54 and 499,401

Step by Step Solution

1. Step 1: Write the proportion equation
   901,809 : 1,244,535.54 = 499,401 : x
2. Step 2: Convert to fraction form
   901,809/1,244,535.54 = 499,401/x
3. Step 3: Cross multiply
   901,809x = 1,244,535.54 × 499,401
4. Step 4: Simplify right side
   901,809x = 621,522,293,211.54
5. Step 5: Solve for x
   x = 621,522,293,211.54/901,809
6. Step 6: Final answer
   x = 689,195.04