Finding the Fourth Proportional to 2,215,402.85, 3,057,500.39 and 1,285,315.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215,402.85 : 3,057,500.39 = 1,285,315.49 : x
2. Step 2: Convert to fraction form
   2,215,402.85/3,057,500.39 = 1,285,315.49/x
3. Step 3: Cross multiply
   2,215,402.85x = 3,057,500.39 × 1,285,315.49
4. Step 4: Simplify right side
   2,215,402.85x = 3,929,852,613,165.21
5. Step 5: Solve for x
   x = 3,929,852,613,165.21/2,215,402.85
6. Step 6: Final answer
   x = 1,773,877.20