Finding the Fourth Proportional to 3,408,477.86, 5,113,416.15 and 1,386,716.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,408,477.86 : 5,113,416.15 = 1,386,716.42 : x
2. Step 2: Convert to fraction form
   3,408,477.86/5,113,416.15 = 1,386,716.42/x
3. Step 3: Cross multiply
   3,408,477.86x = 5,113,416.15 × 1,386,716.42
4. Step 4: Simplify right side
   3,408,477.86x = 7,090,858,137,498.18
5. Step 5: Solve for x
   x = 7,090,858,137,498.18/3,408,477.86
6. Step 6: Final answer
   x = 2,080,359.16