Finding the Fourth Proportional to 2,870.10, 4,305.56 and 995.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.10 : 4,305.56 = 995.76 : x
2. Step 2: Convert to fraction form
   2,870.10/4,305.56 = 995.76/x
3. Step 3: Cross multiply
   2,870.10x = 4,305.56 × 995.76
4. Step 4: Simplify right side
   2,870.10x = 4,287,299.45
5. Step 5: Solve for x
   x = 4,287,299.45/2,870.10
6. Step 6: Final answer
   x = 1,493.78