Finding the Fourth Proportional to 2,158,304.11, 2,978,460.18 and 1,191,435.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,304.11 : 2,978,460.18 = 1,191,435.05 : x
2. Step 2: Convert to fraction form
   2,158,304.11/2,978,460.18 = 1,191,435.05/x
3. Step 3: Cross multiply
   2,158,304.11x = 2,978,460.18 × 1,191,435.05
4. Step 4: Simplify right side
   2,158,304.11x = 3,548,641,860,927.46
5. Step 5: Solve for x
   x = 3,548,641,860,927.46/2,158,304.11
6. Step 6: Final answer
   x = 1,644,180.65