Finding the Fourth Proportional to 2,113,105.40, 3,171,990.90 and 1,315,287.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113,105.40 : 3,171,990.90 = 1,315,287.80 : x
2. Step 2: Convert to fraction form
   2,113,105.40/3,171,990.90 = 1,315,287.80/x
3. Step 3: Cross multiply
   2,113,105.40x = 3,171,990.90 × 1,315,287.80
4. Step 4: Simplify right side
   2,113,105.40x = 4,172,080,932,481.02
5. Step 5: Solve for x
   x = 4,172,080,932,481.02/2,113,105.40
6. Step 6: Final answer
   x = 1,974,383.74