Finding the Fourth Proportional to 3,061.32, 4,592.21 and 870.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.32 : 4,592.21 = 870.23 : x
2. Step 2: Convert to fraction form
   3,061.32/4,592.21 = 870.23/x
3. Step 3: Cross multiply
   3,061.32x = 4,592.21 × 870.23
4. Step 4: Simplify right side
   3,061.32x = 3,996,278.91
5. Step 5: Solve for x
   x = 3,996,278.91/3,061.32
6. Step 6: Final answer
   x = 1,305.41