Finding the Fourth Proportional to 1,114,915,275.83, 1,538,147,621.39 and 638,350,949.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114,915,275.83 : 1,538,147,621.39 = 638,350,949.62 : x
2. Step 2: Convert to fraction form
   1,114,915,275.83/1,538,147,621.39 = 638,350,949.62/x
3. Step 3: Cross multiply
   1,114,915,275.83x = 1,538,147,621.39 × 638,350,949.62
4. Step 4: Simplify right side
   1,114,915,275.83x = 981,877,994,763,013,504
5. Step 5: Solve for x
   x = 981,877,994,763,013,504/1,114,915,275.83
6. Step 6: Final answer
   x = 880,674,985.85