Finding the Fourth Proportional to 2,310.41, 3,188.31 and 1,315.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.41 : 3,188.31 = 1,315.61 : x
2. Step 2: Convert to fraction form
   2,310.41/3,188.31 = 1,315.61/x
3. Step 3: Cross multiply
   2,310.41x = 3,188.31 × 1,315.61
4. Step 4: Simplify right side
   2,310.41x = 4,194,572.52
5. Step 5: Solve for x
   x = 4,194,572.52/2,310.41
6. Step 6: Final answer
   x = 1,815.51