Finding the Fourth Proportional to 3,914.43, 5,867.94 and 1,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.43 : 5,867.94 = 1,315.50 : x
2. Step 2: Convert to fraction form
   3,914.43/5,867.94 = 1,315.50/x
3. Step 3: Cross multiply
   3,914.43x = 5,867.94 × 1,315.50
4. Step 4: Simplify right side
   3,914.43x = 7,719,275.07
5. Step 5: Solve for x
   x = 7,719,275.07/3,914.43
6. Step 6: Final answer
   x = 1,972.00