Finding the Fourth Proportional to 2,617,528.56, 3,926,341.98 and 820,372.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617,528.56 : 3,926,341.98 = 820,372.20 : x
2. Step 2: Convert to fraction form
   2,617,528.56/3,926,341.98 = 820,372.20/x
3. Step 3: Cross multiply
   2,617,528.56x = 3,926,341.98 × 820,372.20
4. Step 4: Simplify right side
   2,617,528.56x = 3,221,061,808,084.96
5. Step 5: Solve for x
   x = 3,221,061,808,084.96/2,617,528.56
6. Step 6: Final answer
   x = 1,230,573.70