Finding the Fourth Proportional to 2,158,441.36, 2,978,632.38 and 1,191,572.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,441.36 : 2,978,632.38 = 1,191,572.98 : x
2. Step 2: Convert to fraction form
   2,158,441.36/2,978,632.38 = 1,191,572.98/x
3. Step 3: Cross multiply
   2,158,441.36x = 2,978,632.38 × 1,191,572.98
4. Step 4: Simplify right side
   2,158,441.36x = 3,549,257,861,361.09
5. Step 5: Solve for x
   x = 3,549,257,861,361.09/2,158,441.36
6. Step 6: Final answer
   x = 1,644,361.49