Finding the Fourth Proportional to 1,710.72, 2,563.92 and 1,425.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,710.72 : 2,563.92 = 1,425.60 : x
2. Step 2: Convert to fraction form
   1,710.72/2,563.92 = 1,425.60/x
3. Step 3: Cross multiply
   1,710.72x = 2,563.92 × 1,425.60
4. Step 4: Simplify right side
   1,710.72x = 3,655,124.35
5. Step 5: Solve for x
   x = 3,655,124.35/1,710.72
6. Step 6: Final answer
   x = 2,136.60