Finding the Fourth Proportional to 820,485, 1,132,308.18 and 462,789

Step by Step Solution

1. Step 1: Write the proportion equation
   820,485 : 1,132,308.18 = 462,789 : x
2. Step 2: Convert to fraction form
   820,485/1,132,308.18 = 462,789/x
3. Step 3: Cross multiply
   820,485x = 1,132,308.18 × 462,789
4. Step 4: Simplify right side
   820,485x = 524,019,770,314.02
5. Step 5: Solve for x
   x = 524,019,770,314.02/820,485
6. Step 6: Final answer
   x = 638,670.75