Finding the Fourth Proportional to 2,158,262.88, 2,978,403.34 and 1,191,393.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,262.88 : 2,978,403.34 = 1,191,393.84 : x
2. Step 2: Convert to fraction form
   2,158,262.88/2,978,403.34 = 1,191,393.84/x
3. Step 3: Cross multiply
   2,158,262.88x = 2,978,403.34 × 1,191,393.84
4. Step 4: Simplify right side
   2,158,262.88x = 3,548,451,392,311.43
5. Step 5: Solve for x
   x = 3,548,451,392,311.43/2,158,262.88
6. Step 6: Final answer
   x = 1,644,123.81