Finding the Fourth Proportional to 1,593.72, 2,199.30 and 885.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,593.72 : 2,199.30 = 885.57 : x
2. Step 2: Convert to fraction form
   1,593.72/2,199.30 = 885.57/x
3. Step 3: Cross multiply
   1,593.72x = 2,199.30 × 885.57
4. Step 4: Simplify right side
   1,593.72x = 1,947,634.10
5. Step 5: Solve for x
   x = 1,947,634.10/1,593.72
6. Step 6: Final answer
   x = 1,222.07