Finding the Fourth Proportional to 2,257,478.72, 3,386,321.76 and 574,596.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,257,478.72 : 3,386,321.76 = 574,596.80 : x
2. Step 2: Convert to fraction form
   2,257,478.72/3,386,321.76 = 574,596.80/x
3. Step 3: Cross multiply
   2,257,478.72x = 3,386,321.76 × 574,596.80
4. Step 4: Simplify right side
   2,257,478.72x = 1,945,769,647,066.37
5. Step 5: Solve for x
   x = 1,945,769,647,066.37/2,257,478.72
6. Step 6: Final answer
   x = 861,921.59