Finding the Fourth Proportional to 2,141,014.16, 3,210,720.87 and 861,189.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141,014.16 : 3,210,720.87 = 861,189.15 : x
2. Step 2: Convert to fraction form
   2,141,014.16/3,210,720.87 = 861,189.15/x
3. Step 3: Cross multiply
   2,141,014.16x = 3,210,720.87 × 861,189.15
4. Step 4: Simplify right side
   2,141,014.16x = 2,765,037,976,922.56
5. Step 5: Solve for x
   x = 2,765,037,976,922.56/2,141,014.16
6. Step 6: Final answer
   x = 1,291,461.79