Finding the Fourth Proportional to 2,158,506.24, 2,978,743.60 and 1,191,637.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,506.24 : 2,978,743.60 = 1,191,637.20 : x
2. Step 2: Convert to fraction form
   2,158,506.24/2,978,743.60 = 1,191,637.20/x
3. Step 3: Cross multiply
   2,158,506.24x = 2,978,743.60 × 1,191,637.20
4. Step 4: Simplify right side
   2,158,506.24x = 3,549,581,683,021.92
5. Step 5: Solve for x
   x = 3,549,581,683,021.92/2,158,506.24
6. Step 6: Final answer
   x = 1,644,462.09