Finding the Fourth Proportional to 2,310.69, 3,188.79 and 1,315.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.69 : 3,188.79 = 1,315.98 : x
2. Step 2: Convert to fraction form
   2,310.69/3,188.79 = 1,315.98/x
3. Step 3: Cross multiply
   2,310.69x = 3,188.79 × 1,315.98
4. Step 4: Simplify right side
   2,310.69x = 4,196,383.86
5. Step 5: Solve for x
   x = 4,196,383.86/2,310.69
6. Step 6: Final answer
   x = 1,816.07