Finding the Fourth Proportional to 1,766,026.10, 2,649,233.55 and 644,338.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766,026.10 : 2,649,233.55 = 644,338.10 : x
2. Step 2: Convert to fraction form
   1,766,026.10/2,649,233.55 = 644,338.10/x
3. Step 3: Cross multiply
   1,766,026.10x = 2,649,233.55 × 644,338.10
4. Step 4: Simplify right side
   1,766,026.10x = 1,707,002,112,063.26
5. Step 5: Solve for x
   x = 1,707,002,112,063.26/1,766,026.10
6. Step 6: Final answer
   x = 966,578.08