Finding the Fourth Proportional to 2,161,020.52, 3,241,714.86 and 644,605.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,161,020.52 : 3,241,714.86 = 644,605.72 : x
2. Step 2: Convert to fraction form
   2,161,020.52/3,241,714.86 = 644,605.72/x
3. Step 3: Cross multiply
   2,161,020.52x = 3,241,714.86 × 644,605.72
4. Step 4: Simplify right side
   2,161,020.52x = 2,089,627,941,365.00
5. Step 5: Solve for x
   x = 2,089,627,941,365.00/2,161,020.52
6. Step 6: Final answer
   x = 966,963.49