Finding the Fourth Proportional to 2,218,826,496.26, 3,327,454,696.06 and 644,606,290.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218,826,496.26 : 3,327,454,696.06 = 644,606,290.15 : x
2. Step 2: Convert to fraction form
   2,218,826,496.26/3,327,454,696.06 = 644,606,290.15/x
3. Step 3: Cross multiply
   2,218,826,496.26x = 3,327,454,696.06 × 644,606,290.15
4. Step 4: Simplify right side
   2,218,826,496.26x = 2,144,898,227,258,341,888
5. Step 5: Solve for x
   x = 2,144,898,227,258,341,888/2,218,826,496.26
6. Step 6: Final answer
   x = 966,681,365.52