Finding the Fourth Proportional to 2,158,338.62, 2,978,295 and 1,191,406.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,338.62 : 2,978,295 = 1,191,406.52 : x
2. Step 2: Convert to fraction form
   2,158,338.62/2,978,295 = 1,191,406.52/x
3. Step 3: Cross multiply
   2,158,338.62x = 2,978,295 × 1,191,406.52
4. Step 4: Simplify right side
   2,158,338.62x = 3,548,360,081,483.40
5. Step 5: Solve for x
   x = 3,548,360,081,483.40/2,158,338.62
6. Step 6: Final answer
   x = 1,644,023.81