Finding the Fourth Proportional to 2,020,749,715.86, 2,788,604,930.16 and 1,128,689,460.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020,749,715.86 : 2,788,604,930.16 = 1,128,689,460.78 : x
2. Step 2: Convert to fraction form
   2,020,749,715.86/2,788,604,930.16 = 1,128,689,460.78/x
3. Step 3: Cross multiply
   2,020,749,715.86x = 2,788,604,930.16 × 1,128,689,460.78
4. Step 4: Simplify right side
   2,020,749,715.86x = 3,147,468,994,950,739,456
5. Step 5: Solve for x
   x = 3,147,468,994,950,739,456/2,020,749,715.86
6. Step 6: Final answer
   x = 1,557,574,879.39