Finding the Fourth Proportional to 2,870.64, 3,956.31 and 2,083.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.64 : 3,956.31 = 2,083.32 : x
2. Step 2: Convert to fraction form
   2,870.64/3,956.31 = 2,083.32/x
3. Step 3: Cross multiply
   2,870.64x = 3,956.31 × 2,083.32
4. Step 4: Simplify right side
   2,870.64x = 8,242,259.75
5. Step 5: Solve for x
   x = 8,242,259.75/2,870.64
6. Step 6: Final answer
   x = 2,871.23