Finding the Fourth Proportional to 2,719.86, 4,076.58 and 1,313.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,719.86 : 4,076.58 = 1,313.40 : x
2. Step 2: Convert to fraction form
   2,719.86/4,076.58 = 1,313.40/x
3. Step 3: Cross multiply
   2,719.86x = 4,076.58 × 1,313.40
4. Step 4: Simplify right side
   2,719.86x = 5,354,180.17
5. Step 5: Solve for x
   x = 5,354,180.17/2,719.86
6. Step 6: Final answer
   x = 1,968.55