Finding the Fourth Proportional to 4,763.72, 7,146.06 and 1,685

Step by Step Solution

1. Step 1: Write the proportion equation
   4,763.72 : 7,146.06 = 1,685 : x
2. Step 2: Convert to fraction form
   4,763.72/7,146.06 = 1,685/x
3. Step 3: Cross multiply
   4,763.72x = 7,146.06 × 1,685
4. Step 4: Simplify right side
   4,763.72x = 12,041,111.10
5. Step 5: Solve for x
   x = 12,041,111.10/4,763.72
6. Step 6: Final answer
   x = 2,527.67