Finding the Fourth Proportional to 2,159,910, 3,240,389.88 and 664,002

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159,910 : 3,240,389.88 = 664,002 : x
2. Step 2: Convert to fraction form
   2,159,910/3,240,389.88 = 664,002/x
3. Step 3: Cross multiply
   2,159,910x = 3,240,389.88 × 664,002
4. Step 4: Simplify right side
   2,159,910x = 2,151,625,361,099.76
5. Step 5: Solve for x
   x = 2,151,625,361,099.76/2,159,910
6. Step 6: Final answer
   x = 996,164.36