Finding the Fourth Proportional to 2,141,015.17, 3,210,722.37 and 861,190.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141,015.17 : 3,210,722.37 = 861,190.15 : x
2. Step 2: Convert to fraction form
   2,141,015.17/3,210,722.37 = 861,190.15/x
3. Step 3: Cross multiply
   2,141,015.17x = 3,210,722.37 × 861,190.15
4. Step 4: Simplify right side
   2,141,015.17x = 2,765,042,479,428.66
5. Step 5: Solve for x
   x = 2,765,042,479,428.66/2,141,015.17
6. Step 6: Final answer
   x = 1,291,463.29