Finding the Fourth Proportional to 3,914.39, 5,867.93 and 1,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.39 : 5,867.93 = 1,315.50 : x
2. Step 2: Convert to fraction form
   3,914.39/5,867.93 = 1,315.50/x
3. Step 3: Cross multiply
   3,914.39x = 5,867.93 × 1,315.50
4. Step 4: Simplify right side
   3,914.39x = 7,719,255.34
5. Step 5: Solve for x
   x = 7,719,255.34/3,914.39
6. Step 6: Final answer
   x = 1,972.02