Finding the Fourth Proportional to 2,308.52, 3,185.22 and 1,313.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.52 : 3,185.22 = 1,313.72 : x
2. Step 2: Convert to fraction form
   2,308.52/3,185.22 = 1,313.72/x
3. Step 3: Cross multiply
   2,308.52x = 3,185.22 × 1,313.72
4. Step 4: Simplify right side
   2,308.52x = 4,184,487.22
5. Step 5: Solve for x
   x = 4,184,487.22/2,308.52
6. Step 6: Final answer
   x = 1,812.63