Finding the Fourth Proportional to 1,315.89, 1,973.82 and 536.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,315.89 : 1,973.82 = 536.22 : x
2. Step 2: Convert to fraction form
   1,315.89/1,973.82 = 536.22/x
3. Step 3: Cross multiply
   1,315.89x = 1,973.82 × 536.22
4. Step 4: Simplify right side
   1,315.89x = 1,058,401.76
5. Step 5: Solve for x
   x = 1,058,401.76/1,315.89
6. Step 6: Final answer
   x = 804.32