Finding the Fourth Proportional to 2,231,200.80, 3,079,080.96 and 1,212,605.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231,200.80 : 3,079,080.96 = 1,212,605.60 : x
2. Step 2: Convert to fraction form
   2,231,200.80/3,079,080.96 = 1,212,605.60/x
3. Step 3: Cross multiply
   2,231,200.80x = 3,079,080.96 × 1,212,605.60
4. Step 4: Simplify right side
   2,231,200.80x = 3,733,710,814,949.38
5. Step 5: Solve for x
   x = 3,733,710,814,949.38/2,231,200.80
6. Step 6: Final answer
   x = 1,673,408.69