Finding the Fourth Proportional to 2,158,542.09, 2,978,791.86 and 1,191,673.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,542.09 : 2,978,791.86 = 1,191,673.94 : x
2. Step 2: Convert to fraction form
   2,158,542.09/2,978,791.86 = 1,191,673.94/x
3. Step 3: Cross multiply
   2,158,542.09x = 2,978,791.86 × 1,191,673.94
4. Step 4: Simplify right side
   2,158,542.09x = 3,549,748,617,352.17
5. Step 5: Solve for x
   x = 3,549,748,617,352.17/2,158,542.09
6. Step 6: Final answer
   x = 1,644,512.11