Finding the Fourth Proportional to 2,158,449.57, 2,978,684.55 and 1,191,580.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,449.57 : 2,978,684.55 = 1,191,580.38 : x
2. Step 2: Convert to fraction form
   2,158,449.57/2,978,684.55 = 1,191,580.38/x
3. Step 3: Cross multiply
   2,158,449.57x = 2,978,684.55 × 1,191,580.38
4. Step 4: Simplify right side
   2,158,449.57x = 3,549,342,067,989.13
5. Step 5: Solve for x
   x = 3,549,342,067,989.13/2,158,449.57
6. Step 6: Final answer
   x = 1,644,394.25