Finding the Fourth Proportional to 1,997,678,345.28, 2,756,775,811.68 and 1,105,606,806.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997,678,345.28 : 2,756,775,811.68 = 1,105,606,806.72 : x
2. Step 2: Convert to fraction form
   1,997,678,345.28/2,756,775,811.68 = 1,105,606,806.72/x
3. Step 3: Cross multiply
   1,997,678,345.28x = 2,756,775,811.68 × 1,105,606,806.72
4. Step 4: Simplify right side
   1,997,678,345.28x = 3,047,910,101,994,460,672
5. Step 5: Solve for x
   x = 3,047,910,101,994,460,672/1,997,678,345.28
6. Step 6: Final answer
   x = 1,525,726,155.66