Finding the Fourth Proportional to 2,158,408.10, 2,978,627.28 and 1,191,538.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,408.10 : 2,978,627.28 = 1,191,538.88 : x
2. Step 2: Convert to fraction form
   2,158,408.10/2,978,627.28 = 1,191,538.88/x
3. Step 3: Cross multiply
   2,158,408.10x = 2,978,627.28 × 1,191,538.88
4. Step 4: Simplify right side
   2,158,408.10x = 3,549,150,213,148.65
5. Step 5: Solve for x
   x = 3,549,150,213,148.65/2,158,408.10
6. Step 6: Final answer
   x = 1,644,336.96