Finding the Fourth Proportional to 2,166,830.61, 2,990,169.01 and 1,236,521.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,830.61 : 2,990,169.01 = 1,236,521.69 : x
2. Step 2: Convert to fraction form
   2,166,830.61/2,990,169.01 = 1,236,521.69/x
3. Step 3: Cross multiply
   2,166,830.61x = 2,990,169.01 × 1,236,521.69
4. Step 4: Simplify right side
   2,166,830.61x = 3,697,408,842,267.78
5. Step 5: Solve for x
   x = 3,697,408,842,267.78/2,166,830.61
6. Step 6: Final answer
   x = 1,706,367.27