Finding the Fourth Proportional to 2,165,468,448.30, 2,988,269,139.15 and 1,225,650,912.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,165,468,448.30 : 2,988,269,139.15 = 1,225,650,912.06 : x
2. Step 2: Convert to fraction form
   2,165,468,448.30/2,988,269,139.15 = 1,225,650,912.06/x
3. Step 3: Cross multiply
   2,165,468,448.30x = 2,988,269,139.15 × 1,225,650,912.06
4. Step 4: Simplify right side
   2,165,468,448.30x = 3,662,574,795,879,948,288
5. Step 5: Solve for x
   x = 3,662,574,795,879,948,288/2,165,468,448.30
6. Step 6: Final answer
   x = 1,691,354,495.95