Finding the Fourth Proportional to 1,662.57, 2,478.89 and 1,523.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.57 : 2,478.89 = 1,523.79 : x
2. Step 2: Convert to fraction form
   1,662.57/2,478.89 = 1,523.79/x
3. Step 3: Cross multiply
   1,662.57x = 2,478.89 × 1,523.79
4. Step 4: Simplify right side
   1,662.57x = 3,777,311.60
5. Step 5: Solve for x
   x = 3,777,311.60/1,662.57
6. Step 6: Final answer
   x = 2,271.97