Finding the Fourth Proportional to 2,310.07, 3,187.10 and 1,315.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.07 : 3,187.10 = 1,315.10 : x
2. Step 2: Convert to fraction form
   2,310.07/3,187.10 = 1,315.10/x
3. Step 3: Cross multiply
   2,310.07x = 3,187.10 × 1,315.10
4. Step 4: Simplify right side
   2,310.07x = 4,191,339.27
5. Step 5: Solve for x
   x = 4,191,339.27/2,310.07
6. Step 6: Final answer
   x = 1,814.38