Finding the Fourth Proportional to 2,978.66, 4,111.09 and 1,719.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.66 : 4,111.09 = 1,719.54 : x
2. Step 2: Convert to fraction form
   2,978.66/4,111.09 = 1,719.54/x
3. Step 3: Cross multiply
   2,978.66x = 4,111.09 × 1,719.54
4. Step 4: Simplify right side
   2,978.66x = 7,069,179.40
5. Step 5: Solve for x
   x = 7,069,179.40/2,978.66
6. Step 6: Final answer
   x = 2,373.27