Finding the Fourth Proportional to 2,158,556.22, 2,978,811.37 and 1,191,688.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,556.22 : 2,978,811.37 = 1,191,688.08 : x
2. Step 2: Convert to fraction form
   2,158,556.22/2,978,811.37 = 1,191,688.08/x
3. Step 3: Cross multiply
   2,158,556.22x = 2,978,811.37 × 1,191,688.08
4. Step 4: Simplify right side
   2,158,556.22x = 3,549,814,002,197.47
5. Step 5: Solve for x
   x = 3,549,814,002,197.47/2,158,556.22
6. Step 6: Final answer
   x = 1,644,531.64