Finding the Fourth Proportional to 1,968.10, 2,715.96 and 1,071.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,968.10 : 2,715.96 = 1,071.82 : x
2. Step 2: Convert to fraction form
   1,968.10/2,715.96 = 1,071.82/x
3. Step 3: Cross multiply
   1,968.10x = 2,715.96 × 1,071.82
4. Step 4: Simplify right side
   1,968.10x = 2,911,020.25
5. Step 5: Solve for x
   x = 2,911,020.25/1,968.10
6. Step 6: Final answer
   x = 1,479.10