Finding the Fourth Proportional to 1,709.30, 2,564.96 and 722.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,709.30 : 2,564.96 = 722.05 : x
2. Step 2: Convert to fraction form
   1,709.30/2,564.96 = 722.05/x
3. Step 3: Cross multiply
   1,709.30x = 2,564.96 × 722.05
4. Step 4: Simplify right side
   1,709.30x = 1,852,031.03
5. Step 5: Solve for x
   x = 1,852,031.03/1,709.30
6. Step 6: Final answer
   x = 1,083.50