Finding the Fourth Proportional to 1,800,870,106.78, 2,485,278,418.29 and 997,097,597.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800,870,106.78 : 2,485,278,418.29 = 997,097,597.38 : x
2. Step 2: Convert to fraction form
   1,800,870,106.78/2,485,278,418.29 = 997,097,597.38/x
3. Step 3: Cross multiply
   1,800,870,106.78x = 2,485,278,418.29 × 997,097,597.38
4. Step 4: Simplify right side
   1,800,870,106.78x = 2,478,065,139,684,899,328
5. Step 5: Solve for x
   x = 2,478,065,139,684,899,328/1,800,870,106.78
6. Step 6: Final answer
   x = 1,376,037,688.87