Finding the Fourth Proportional to 2,158,076.27, 2,978,145.41 and 1,191,206.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,076.27 : 2,978,145.41 = 1,191,206.81 : x
2. Step 2: Convert to fraction form
   2,158,076.27/2,978,145.41 = 1,191,206.81/x
3. Step 3: Cross multiply
   2,158,076.27x = 2,978,145.41 × 1,191,206.81
4. Step 4: Simplify right side
   2,158,076.27x = 3,547,587,093,562.24
5. Step 5: Solve for x
   x = 3,547,587,093,562.24/2,158,076.27
6. Step 6: Final answer
   x = 1,643,865.48