Finding the Fourth Proportional to 2,310.88, 3,188.82 and 1,316.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.88 : 3,188.82 = 1,316.15 : x
2. Step 2: Convert to fraction form
   2,310.88/3,188.82 = 1,316.15/x
3. Step 3: Cross multiply
   2,310.88x = 3,188.82 × 1,316.15
4. Step 4: Simplify right side
   2,310.88x = 4,196,958.99
5. Step 5: Solve for x
   x = 4,196,958.99/2,310.88
6. Step 6: Final answer
   x = 1,816.17