Finding the Fourth Proportional to 2,158,581.88, 2,978,942.70 and 1,191,849.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,581.88 : 2,978,942.70 = 1,191,849.40 : x
2. Step 2: Convert to fraction form
   2,158,581.88/2,978,942.70 = 1,191,849.40/x
3. Step 3: Cross multiply
   2,158,581.88x = 2,978,942.70 × 1,191,849.40
4. Step 4: Simplify right side
   2,158,581.88x = 3,550,451,069,629.38
5. Step 5: Solve for x
   x = 3,550,451,069,629.38/2,158,581.88
6. Step 6: Final answer
   x = 1,644,807.22