Finding the Fourth Proportional to 2,375.89, 3,278.71 and 1,313.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,375.89 : 3,278.71 = 1,313.64 : x
2. Step 2: Convert to fraction form
   2,375.89/3,278.71 = 1,313.64/x
3. Step 3: Cross multiply
   2,375.89x = 3,278.71 × 1,313.64
4. Step 4: Simplify right side
   2,375.89x = 4,307,046.25
5. Step 5: Solve for x
   x = 4,307,046.25/2,375.89
6. Step 6: Final answer
   x = 1,812.82