Finding the Fourth Proportional to 1,408,736, 2,113,435.72 and 1,121,633.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408,736 : 2,113,435.72 = 1,121,633.53 : x
2. Step 2: Convert to fraction form
   1,408,736/2,113,435.72 = 1,121,633.53/x
3. Step 3: Cross multiply
   1,408,736x = 2,113,435.72 × 1,121,633.53
4. Step 4: Simplify right side
   1,408,736x = 2,370,500,367,051.69
5. Step 5: Solve for x
   x = 2,370,500,367,051.69/1,408,736
6. Step 6: Final answer
   x = 1,682,714.41