Finding the Fourth Proportional to 1,662.72, 2,490.72 and 1,526.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.72 : 2,490.72 = 1,526.64 : x
2. Step 2: Convert to fraction form
   1,662.72/2,490.72 = 1,526.64/x
3. Step 3: Cross multiply
   1,662.72x = 2,490.72 × 1,526.64
4. Step 4: Simplify right side
   1,662.72x = 3,802,432.78
5. Step 5: Solve for x
   x = 3,802,432.78/1,662.72
6. Step 6: Final answer
   x = 2,286.87