Finding the Fourth Proportional to 2,103,288.56, 3,155,357.26 and 664,196.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103,288.56 : 3,155,357.26 = 664,196.80 : x
2. Step 2: Convert to fraction form
   2,103,288.56/3,155,357.26 = 664,196.80/x
3. Step 3: Cross multiply
   2,103,288.56x = 3,155,357.26 × 664,196.80
4. Step 4: Simplify right side
   2,103,288.56x = 2,095,778,194,948.77
5. Step 5: Solve for x
   x = 2,095,778,194,948.77/2,103,288.56
6. Step 6: Final answer
   x = 996,429.23