Finding the Fourth Proportional to 1,454,499.72, 2,180,735.64 and 644,443.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,454,499.72 : 2,180,735.64 = 644,443.74 : x
2. Step 2: Convert to fraction form
   1,454,499.72/2,180,735.64 = 644,443.74/x
3. Step 3: Cross multiply
   1,454,499.72x = 2,180,735.64 × 644,443.74
4. Step 4: Simplify right side
   1,454,499.72x = 1,405,361,431,792.89
5. Step 5: Solve for x
   x = 1,405,361,431,792.89/1,454,499.72
6. Step 6: Final answer
   x = 966,216.36