Finding the Fourth Proportional to 2,310.69, 3,181.36 and 1,870.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.69 : 3,181.36 = 1,870.05 : x
2. Step 2: Convert to fraction form
   2,310.69/3,181.36 = 1,870.05/x
3. Step 3: Cross multiply
   2,310.69x = 3,181.36 × 1,870.05
4. Step 4: Simplify right side
   2,310.69x = 5,949,302.27
5. Step 5: Solve for x
   x = 5,949,302.27/2,310.69
6. Step 6: Final answer
   x = 2,574.69