Finding the Fourth Proportional to 2,178,081.69, 3,261,890.13 and 1,216,173.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178,081.69 : 3,261,890.13 = 1,216,173.48 : x
2. Step 2: Convert to fraction form
   2,178,081.69/3,261,890.13 = 1,216,173.48/x
3. Step 3: Cross multiply
   2,178,081.69x = 3,261,890.13 × 1,216,173.48
4. Step 4: Simplify right side
   2,178,081.69x = 3,967,024,270,779.75
5. Step 5: Solve for x
   x = 3,967,024,270,779.75/2,178,081.69
6. Step 6: Final answer
   x = 1,821,338.61