Finding the Fourth Proportional to 839,870.72, 1,260,328.57 and 341,234.72

Step by Step Solution

1. Step 1: Write the proportion equation
   839,870.72 : 1,260,328.57 = 341,234.72 : x
2. Step 2: Convert to fraction form
   839,870.72/1,260,328.57 = 341,234.72/x
3. Step 3: Cross multiply
   839,870.72x = 1,260,328.57 × 341,234.72
4. Step 4: Simplify right side
   839,870.72x = 430,067,868,989.69
5. Step 5: Solve for x
   x = 430,067,868,989.69/839,870.72
6. Step 6: Final answer
   x = 512,064.37