Finding the Fourth Proportional to 1,710.33, 2,563.29 and 772.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,710.33 : 2,563.29 = 772.59 : x
2. Step 2: Convert to fraction form
   1,710.33/2,563.29 = 772.59/x
3. Step 3: Cross multiply
   1,710.33x = 2,563.29 × 772.59
4. Step 4: Simplify right side
   1,710.33x = 1,980,372.22
5. Step 5: Solve for x
   x = 1,980,372.22/1,710.33
6. Step 6: Final answer
   x = 1,157.89