Finding the Fourth Proportional to 2,868.62, 3,958.72 and 1,873.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.62 : 3,958.72 = 1,873.30 : x
2. Step 2: Convert to fraction form
   2,868.62/3,958.72 = 1,873.30/x
3. Step 3: Cross multiply
   2,868.62x = 3,958.72 × 1,873.30
4. Step 4: Simplify right side
   2,868.62x = 7,415,870.18
5. Step 5: Solve for x
   x = 7,415,870.18/2,868.62
6. Step 6: Final answer
   x = 2,585.17