Finding the Fourth Proportional to 2,158,369.01, 2,978,471.16 and 1,191,478.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,369.01 : 2,978,471.16 = 1,191,478.55 : x
2. Step 2: Convert to fraction form
   2,158,369.01/2,978,471.16 = 1,191,478.55/x
3. Step 3: Cross multiply
   2,158,369.01x = 2,978,471.16 × 1,191,478.55
4. Step 4: Simplify right side
   2,158,369.01x = 3,548,784,498,933.62
5. Step 5: Solve for x
   x = 3,548,784,498,933.62/2,158,369.01
6. Step 6: Final answer
   x = 1,644,197.30