Finding the Fourth Proportional to 1,710.72, 2,564.52 and 614.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,710.72 : 2,564.52 = 614.76 : x
2. Step 2: Convert to fraction form
   1,710.72/2,564.52 = 614.76/x
3. Step 3: Cross multiply
   1,710.72x = 2,564.52 × 614.76
4. Step 4: Simplify right side
   1,710.72x = 1,576,564.32
5. Step 5: Solve for x
   x = 1,576,564.32/1,710.72
6. Step 6: Final answer
   x = 921.58