Finding the Fourth Proportional to 1,968, 2,715.82 and 1,171.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,968 : 2,715.82 = 1,171.87 : x
2. Step 2: Convert to fraction form
   1,968/2,715.82 = 1,171.87/x
3. Step 3: Cross multiply
   1,968x = 2,715.82 × 1,171.87
4. Step 4: Simplify right side
   1,968x = 3,182,587.98
5. Step 5: Solve for x
   x = 3,182,587.98/1,968
6. Step 6: Final answer
   x = 1,617.17