Finding the Fourth Proportional to 3,061.46, 4,592.22 and 870.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.46 : 4,592.22 = 870.20 : x
2. Step 2: Convert to fraction form
   3,061.46/4,592.22 = 870.20/x
3. Step 3: Cross multiply
   3,061.46x = 4,592.22 × 870.20
4. Step 4: Simplify right side
   3,061.46x = 3,996,149.84
5. Step 5: Solve for x
   x = 3,996,149.84/3,061.46
6. Step 6: Final answer
   x = 1,305.31