Finding the Fourth Proportional to 3,061.41, 4,591.43 and 870.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.41 : 4,591.43 = 870.09 : x
2. Step 2: Convert to fraction form
   3,061.41/4,591.43 = 870.09/x
3. Step 3: Cross multiply
   3,061.41x = 4,591.43 × 870.09
4. Step 4: Simplify right side
   3,061.41x = 3,994,952.98
5. Step 5: Solve for x
   x = 3,994,952.98/3,061.41
6. Step 6: Final answer
   x = 1,304.94