Finding the Fourth Proportional to 1,490,567,856.89, 2,056,977,426.68 and 821,511,304.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490,567,856.89 : 2,056,977,426.68 = 821,511,304.98 : x
2. Step 2: Convert to fraction form
   1,490,567,856.89/2,056,977,426.68 = 821,511,304.98/x
3. Step 3: Cross multiply
   1,490,567,856.89x = 2,056,977,426.68 × 821,511,304.98
4. Step 4: Simplify right side
   1,490,567,856.89x = 1,689,830,210,097,589,760
5. Step 5: Solve for x
   x = 1,689,830,210,097,589,760/1,490,567,856.89
6. Step 6: Final answer
   x = 1,133,682,175.08