Finding the Fourth Proportional to 1,766,139.42, 2,649,604.14 and 644,208.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766,139.42 : 2,649,604.14 = 644,208.42 : x
2. Step 2: Convert to fraction form
   1,766,139.42/2,649,604.14 = 644,208.42/x
3. Step 3: Cross multiply
   1,766,139.42x = 2,649,604.14 × 644,208.42
4. Step 4: Simplify right side
   1,766,139.42x = 1,706,897,296,654.86
5. Step 5: Solve for x
   x = 1,706,897,296,654.86/1,766,139.42
6. Step 6: Final answer
   x = 966,456.71