Finding the Fourth Proportional to 1,760.72, 2,626.90 and 1,678.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.72 : 2,626.90 = 1,678.16 : x
2. Step 2: Convert to fraction form
   1,760.72/2,626.90 = 1,678.16/x
3. Step 3: Cross multiply
   1,760.72x = 2,626.90 × 1,678.16
4. Step 4: Simplify right side
   1,760.72x = 4,408,358.50
5. Step 5: Solve for x
   x = 4,408,358.50/1,760.72
6. Step 6: Final answer
   x = 2,503.72