Finding the Fourth Proportional to 2,608,524.42, 3,913,448.49 and 811,421.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608,524.42 : 3,913,448.49 = 811,421.34 : x
2. Step 2: Convert to fraction form
   2,608,524.42/3,913,448.49 = 811,421.34/x
3. Step 3: Cross multiply
   2,608,524.42x = 3,913,448.49 × 811,421.34
4. Step 4: Simplify right side
   2,608,524.42x = 3,175,455,617,776.78
5. Step 5: Solve for x
   x = 3,175,455,617,776.78/2,608,524.42
6. Step 6: Final answer
   x = 1,217,337.89