Finding the Fourth Proportional to 1,380,443,797.33, 1,905,059,449.94 and 816,412,178.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380,443,797.33 : 1,905,059,449.94 = 816,412,178.01 : x
2. Step 2: Convert to fraction form
   1,380,443,797.33/1,905,059,449.94 = 816,412,178.01/x
3. Step 3: Cross multiply
   1,380,443,797.33x = 1,905,059,449.94 × 816,412,178.01
4. Step 4: Simplify right side
   1,380,443,797.33x = 1,555,313,734,764,047,872
5. Step 5: Solve for x
   x = 1,555,313,734,764,047,872/1,380,443,797.33
6. Step 6: Final answer
   x = 1,126,676,607.75