Finding the Fourth Proportional to 3,980.29, 5,968.37 and 1,787.14

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.29 : 5,968.37 = 1,787.14 : x
2. Step 2: Convert to fraction form
   3,980.29/5,968.37 = 1,787.14/x
3. Step 3: Cross multiply
   3,980.29x = 5,968.37 × 1,787.14
4. Step 4: Simplify right side
   3,980.29x = 10,666,302.31
5. Step 5: Solve for x
   x = 10,666,302.31/3,980.29
6. Step 6: Final answer
   x = 2,679.78