Finding the Fourth Proportional to 4,742.72, 7,114.20 and 1,664.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,742.72 : 7,114.20 = 1,664.72 : x
2. Step 2: Convert to fraction form
   4,742.72/7,114.20 = 1,664.72/x
3. Step 3: Cross multiply
   4,742.72x = 7,114.20 × 1,664.72
4. Step 4: Simplify right side
   4,742.72x = 11,843,151.02
5. Step 5: Solve for x
   x = 11,843,151.02/4,742.72
6. Step 6: Final answer
   x = 2,497.12