Finding the Fourth Proportional to 2,866.71, 3,956.73 and 1,870.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.71 : 3,956.73 = 1,870.26 : x
2. Step 2: Convert to fraction form
   2,866.71/3,956.73 = 1,870.26/x
3. Step 3: Cross multiply
   2,866.71x = 3,956.73 × 1,870.26
4. Step 4: Simplify right side
   2,866.71x = 7,400,113.85
5. Step 5: Solve for x
   x = 7,400,113.85/2,866.71
6. Step 6: Final answer
   x = 2,581.40