Finding the Fourth Proportional to 2,170,205.72, 2,994,608.64 and 1,189,886.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,170,205.72 : 2,994,608.64 = 1,189,886.78 : x
2. Step 2: Convert to fraction form
   2,170,205.72/2,994,608.64 = 1,189,886.78/x
3. Step 3: Cross multiply
   2,170,205.72x = 2,994,608.64 × 1,189,886.78
4. Step 4: Simplify right side
   2,170,205.72x = 3,563,245,245,111.19
5. Step 5: Solve for x
   x = 3,563,245,245,111.19/2,170,205.72
6. Step 6: Final answer
   x = 1,641,892.85