Finding the Fourth Proportional to 2,310.22, 3,188.52 and 1,315.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.22 : 3,188.52 = 1,315.78 : x
2. Step 2: Convert to fraction form
   2,310.22/3,188.52 = 1,315.78/x
3. Step 3: Cross multiply
   2,310.22x = 3,188.52 × 1,315.78
4. Step 4: Simplify right side
   2,310.22x = 4,195,390.85
5. Step 5: Solve for x
   x = 4,195,390.85/2,310.22
6. Step 6: Final answer
   x = 1,816.01