Finding the Fourth Proportional to 2,978.16, 4,108.82 and 1,719.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.16 : 4,108.82 = 1,719.18 : x
2. Step 2: Convert to fraction form
   2,978.16/4,108.82 = 1,719.18/x
3. Step 3: Cross multiply
   2,978.16x = 4,108.82 × 1,719.18
4. Step 4: Simplify right side
   2,978.16x = 7,063,801.17
5. Step 5: Solve for x
   x = 7,063,801.17/2,978.16
6. Step 6: Final answer
   x = 2,371.87