Finding the Fourth Proportional to 2,158,261.88, 2,978,401.96 and 1,191,392.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,261.88 : 2,978,401.96 = 1,191,392.84 : x
2. Step 2: Convert to fraction form
   2,158,261.88/2,978,401.96 = 1,191,392.84/x
3. Step 3: Cross multiply
   2,158,261.88x = 2,978,401.96 × 1,191,392.84
4. Step 4: Simplify right side
   2,158,261.88x = 3,548,446,769,785.97
5. Step 5: Solve for x
   x = 3,548,446,769,785.97/2,158,261.88
6. Step 6: Final answer
   x = 1,644,122.43