Finding the Fourth Proportional to 2,080,304.10, 3,120,456.15 and 1,278,987.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080,304.10 : 3,120,456.15 = 1,278,987.30 : x
2. Step 2: Convert to fraction form
   2,080,304.10/3,120,456.15 = 1,278,987.30/x
3. Step 3: Cross multiply
   2,080,304.10x = 3,120,456.15 × 1,278,987.30
4. Step 4: Simplify right side
   2,080,304.10x = 3,991,023,786,056.90
5. Step 5: Solve for x
   x = 3,991,023,786,056.90/2,080,304.10
6. Step 6: Final answer
   x = 1,918,480.95