Finding the Fourth Proportional to 2,158,276.38, 2,978,428.53 and 1,191,404.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,276.38 : 2,978,428.53 = 1,191,404.37 : x
2. Step 2: Convert to fraction form
   2,158,276.38/2,978,428.53 = 1,191,404.37/x
3. Step 3: Cross multiply
   2,158,276.38x = 2,978,428.53 × 1,191,404.37
4. Step 4: Simplify right side
   2,158,276.38x = 3,548,512,766,374.68
5. Step 5: Solve for x
   x = 3,548,512,766,374.68/2,158,276.38
6. Step 6: Final answer
   x = 1,644,141.96