Finding the Fourth Proportional to 1,499,728.12, 2,069,624.94 and 820,664.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499,728.12 : 2,069,624.94 = 820,664.68 : x
2. Step 2: Convert to fraction form
   1,499,728.12/2,069,624.94 = 820,664.68/x
3. Step 3: Cross multiply
   1,499,728.12x = 2,069,624.94 × 820,664.68
4. Step 4: Simplify right side
   1,499,728.12x = 1,698,468,089,105.12
5. Step 5: Solve for x
   x = 1,698,468,089,105.12/1,499,728.12
6. Step 6: Final answer
   x = 1,132,517.33