Finding the Fourth Proportional to 2,870.13, 3,958.62 and 2,472.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.13 : 3,958.62 = 2,472.47 : x
2. Step 2: Convert to fraction form
   2,870.13/3,958.62 = 2,472.47/x
3. Step 3: Cross multiply
   2,870.13x = 3,958.62 × 2,472.47
4. Step 4: Simplify right side
   2,870.13x = 9,787,591.15
5. Step 5: Solve for x
   x = 9,787,591.15/2,870.13
6. Step 6: Final answer
   x = 3,410.15