Finding the Fourth Proportional to 2,158,340.62, 2,978,297.76 and 1,191,408.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,340.62 : 2,978,297.76 = 1,191,408.52 : x
2. Step 2: Convert to fraction form
   2,158,340.62/2,978,297.76 = 1,191,408.52/x
3. Step 3: Cross multiply
   2,158,340.62x = 2,978,297.76 × 1,191,408.52
4. Step 4: Simplify right side
   2,158,340.62x = 3,548,369,326,360.92
5. Step 5: Solve for x
   x = 3,548,369,326,360.92/2,158,340.62
6. Step 6: Final answer
   x = 1,644,026.57