Finding the Fourth Proportional to 2,308.62, 3,185.52 and 1,313.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.62 : 3,185.52 = 1,313.91 : x
2. Step 2: Convert to fraction form
   2,308.62/3,185.52 = 1,313.91/x
3. Step 3: Cross multiply
   2,308.62x = 3,185.52 × 1,313.91
4. Step 4: Simplify right side
   2,308.62x = 4,185,483.30
5. Step 5: Solve for x
   x = 4,185,483.30/2,308.62
6. Step 6: Final answer
   x = 1,812.98