Finding the Fourth Proportional to 2,978.94, 4,111.38 and 1,719.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.94 : 4,111.38 = 1,719.76 : x
2. Step 2: Convert to fraction form
   2,978.94/4,111.38 = 1,719.76/x
3. Step 3: Cross multiply
   2,978.94x = 4,111.38 × 1,719.76
4. Step 4: Simplify right side
   2,978.94x = 7,070,586.87
5. Step 5: Solve for x
   x = 7,070,586.87/2,978.94
6. Step 6: Final answer
   x = 2,373.52