Finding the Fourth Proportional to 2,158,275.38, 2,978,427.15 and 1,191,403.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,275.38 : 2,978,427.15 = 1,191,403.37 : x
2. Step 2: Convert to fraction form
   2,158,275.38/2,978,427.15 = 1,191,403.37/x
3. Step 3: Cross multiply
   2,158,275.38x = 2,978,427.15 × 1,191,403.37
4. Step 4: Simplify right side
   2,158,275.38x = 3,548,508,128,917.36
5. Step 5: Solve for x
   x = 3,548,508,128,917.36/2,158,275.38
6. Step 6: Final answer
   x = 1,644,140.58