Finding the Fourth Proportional to 2,087.22, 2,880.66 and 1,343.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.22 : 2,880.66 = 1,343.31 : x
2. Step 2: Convert to fraction form
   2,087.22/2,880.66 = 1,343.31/x
3. Step 3: Cross multiply
   2,087.22x = 2,880.66 × 1,343.31
4. Step 4: Simplify right side
   2,087.22x = 3,869,619.38
5. Step 5: Solve for x
   x = 3,869,619.38/2,087.22
6. Step 6: Final answer
   x = 1,853.96