Finding the Fourth Proportional to 2,158,348.62, 2,978,308.80 and 1,191,416.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,348.62 : 2,978,308.80 = 1,191,416.52 : x
2. Step 2: Convert to fraction form
   2,158,348.62/2,978,308.80 = 1,191,416.52/x
3. Step 3: Cross multiply
   2,158,348.62x = 2,978,308.80 × 1,191,416.52
4. Step 4: Simplify right side
   2,158,348.62x = 3,548,406,305,981.38
5. Step 5: Solve for x
   x = 3,548,406,305,981.38/2,158,348.62
6. Step 6: Final answer
   x = 1,644,037.61