Finding the Fourth Proportional to 3,061.40, 4,592.06 and 870.14

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.40 : 4,592.06 = 870.14 : x
2. Step 2: Convert to fraction form
   3,061.40/4,592.06 = 870.14/x
3. Step 3: Cross multiply
   3,061.40x = 4,592.06 × 870.14
4. Step 4: Simplify right side
   3,061.40x = 3,995,735.09
5. Step 5: Solve for x
   x = 3,995,735.09/3,061.40
6. Step 6: Final answer
   x = 1,305.20