Finding the Fourth Proportional to 2,189,998.81, 3,021,759.42 and 1,222,980.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189,998.81 : 3,021,759.42 = 1,222,980.31 : x
2. Step 2: Convert to fraction form
   2,189,998.81/3,021,759.42 = 1,222,980.31/x
3. Step 3: Cross multiply
   2,189,998.81x = 3,021,759.42 × 1,222,980.31
4. Step 4: Simplify right side
   2,189,998.81x = 3,695,552,257,108.22
5. Step 5: Solve for x
   x = 3,695,552,257,108.22/2,189,998.81
6. Step 6: Final answer
   x = 1,687,467.70