Finding the Fourth Proportional to 2,158,459.29, 2,978,595.59 and 1,191,568.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,459.29 : 2,978,595.59 = 1,191,568.77 : x
2. Step 2: Convert to fraction form
   2,158,459.29/2,978,595.59 = 1,191,568.77/x
3. Step 3: Cross multiply
   2,158,459.29x = 2,978,595.59 × 1,191,568.77
4. Step 4: Simplify right side
   2,158,459.29x = 3,549,201,477,545.88
5. Step 5: Solve for x
   x = 3,549,201,477,545.88/2,158,459.29
6. Step 6: Final answer
   x = 1,644,321.71