Finding the Fourth Proportional to 2,978.51, 4,109.73 and 1,719.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.51 : 4,109.73 = 1,719.55 : x
2. Step 2: Convert to fraction form
   2,978.51/4,109.73 = 1,719.55/x
3. Step 3: Cross multiply
   2,978.51x = 4,109.73 × 1,719.55
4. Step 4: Simplify right side
   2,978.51x = 7,066,865.67
5. Step 5: Solve for x
   x = 7,066,865.67/2,978.51
6. Step 6: Final answer
   x = 2,372.62