Finding the Fourth Proportional to 2,375.31, 3,277.91 and 1,313.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,375.31 : 3,277.91 = 1,313.15 : x
2. Step 2: Convert to fraction form
   2,375.31/3,277.91 = 1,313.15/x
3. Step 3: Cross multiply
   2,375.31x = 3,277.91 × 1,313.15
4. Step 4: Simplify right side
   2,375.31x = 4,304,387.52
5. Step 5: Solve for x
   x = 4,304,387.52/2,375.31
6. Step 6: Final answer
   x = 1,812.14