Finding the Fourth Proportional to 2,978.74, 4,110.64 and 1,719.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.74 : 4,110.64 = 1,719.78 : x
2. Step 2: Convert to fraction form
   2,978.74/4,110.64 = 1,719.78/x
3. Step 3: Cross multiply
   2,978.74x = 4,110.64 × 1,719.78
4. Step 4: Simplify right side
   2,978.74x = 7,069,396.46
5. Step 5: Solve for x
   x = 7,069,396.46/2,978.74
6. Step 6: Final answer
   x = 2,373.28