Finding the Fourth Proportional to 1,321,579.50, 1,823,781.33 and 717,967.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,579.50 : 1,823,781.33 = 717,967.50 : x
2. Step 2: Convert to fraction form
   1,321,579.50/1,823,781.33 = 717,967.50/x
3. Step 3: Cross multiply
   1,321,579.50x = 1,823,781.33 × 717,967.50
4. Step 4: Simplify right side
   1,321,579.50x = 1,309,415,722,046.78
5. Step 5: Solve for x
   x = 1,309,415,722,046.78/1,321,579.50
6. Step 6: Final answer
   x = 990,796.03