Finding the Fourth Proportional to 2,158,402.59, 2,978,605.08 and 1,191,540.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,402.59 : 2,978,605.08 = 1,191,540.82 : x
2. Step 2: Convert to fraction form
   2,158,402.59/2,978,605.08 = 1,191,540.82/x
3. Step 3: Cross multiply
   2,158,402.59x = 2,978,605.08 × 1,191,540.82
4. Step 4: Simplify right side
   2,158,402.59x = 3,549,129,539,479.37
5. Step 5: Solve for x
   x = 3,549,129,539,479.37/2,158,402.59
6. Step 6: Final answer
   x = 1,644,331.58