Finding the Fourth Proportional to 1,083.58, 1,624.16 and 536.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.58 : 1,624.16 = 536.15 : x
2. Step 2: Convert to fraction form
   1,083.58/1,624.16 = 536.15/x
3. Step 3: Cross multiply
   1,083.58x = 1,624.16 × 536.15
4. Step 4: Simplify right side
   1,083.58x = 870,798.78
5. Step 5: Solve for x
   x = 870,798.78/1,083.58
6. Step 6: Final answer
   x = 803.63