Finding the Fourth Proportional to 1,732.72, 2,599.50 and 578.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,732.72 : 2,599.50 = 578.56 : x
2. Step 2: Convert to fraction form
   1,732.72/2,599.50 = 578.56/x
3. Step 3: Cross multiply
   1,732.72x = 2,599.50 × 578.56
4. Step 4: Simplify right side
   1,732.72x = 1,503,966.72
5. Step 5: Solve for x
   x = 1,503,966.72/1,732.72
6. Step 6: Final answer
   x = 867.98