Finding the Fourth Proportional to 3,061.62, 4,592.61 and 870.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.62 : 4,592.61 = 870.19 : x
2. Step 2: Convert to fraction form
   3,061.62/4,592.61 = 870.19/x
3. Step 3: Cross multiply
   3,061.62x = 4,592.61 × 870.19
4. Step 4: Simplify right side
   3,061.62x = 3,996,431.81
5. Step 5: Solve for x
   x = 3,996,431.81/3,061.62
6. Step 6: Final answer
   x = 1,305.33