Finding the Fourth Proportional to 1,507,568,868, 2,261,354,128.20 and 689,107,212.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507,568,868 : 2,261,354,128.20 = 689,107,212.72 : x
2. Step 2: Convert to fraction form
   1,507,568,868/2,261,354,128.20 = 689,107,212.72/x
3. Step 3: Cross multiply
   1,507,568,868x = 2,261,354,128.20 × 689,107,212.72
4. Step 4: Simplify right side
   1,507,568,868x = 1,558,315,440,256,767,488
5. Step 5: Solve for x
   x = 1,558,315,440,256,767,488/1,507,568,868
6. Step 6: Final answer
   x = 1,033,661,196.73