Finding the Fourth Proportional to 1,179,789.86, 1,769,723.96 and 326,870.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,179,789.86 : 1,769,723.96 = 326,870.07 : x
2. Step 2: Convert to fraction form
   1,179,789.86/1,769,723.96 = 326,870.07/x
3. Step 3: Cross multiply
   1,179,789.86x = 1,769,723.96 × 326,870.07
4. Step 4: Simplify right side
   1,179,789.86x = 578,469,793,051.53
5. Step 5: Solve for x
   x = 578,469,793,051.53/1,179,789.86
6. Step 6: Final answer
   x = 490,315.96