Finding the Fourth Proportional to 2,888.59, 3,985.31 and 1,768.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,888.59 : 3,985.31 = 1,768.36 : x
2. Step 2: Convert to fraction form
   2,888.59/3,985.31 = 1,768.36/x
3. Step 3: Cross multiply
   2,888.59x = 3,985.31 × 1,768.36
4. Step 4: Simplify right side
   2,888.59x = 7,047,462.79
5. Step 5: Solve for x
   x = 7,047,462.79/2,888.59
6. Step 6: Final answer
   x = 2,439.76