Finding the Fourth Proportional to 1,113.98, 1,669.89 and 536.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113.98 : 1,669.89 = 536.18 : x
2. Step 2: Convert to fraction form
   1,113.98/1,669.89 = 536.18/x
3. Step 3: Cross multiply
   1,113.98x = 1,669.89 × 536.18
4. Step 4: Simplify right side
   1,113.98x = 895,361.62
5. Step 5: Solve for x
   x = 895,361.62/1,113.98
6. Step 6: Final answer
   x = 803.75