Finding the Fourth Proportional to 1,173.83, 1,619.72 and 649.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.83 : 1,619.72 = 649.79 : x
2. Step 2: Convert to fraction form
   1,173.83/1,619.72 = 649.79/x
3. Step 3: Cross multiply
   1,173.83x = 1,619.72 × 649.79
4. Step 4: Simplify right side
   1,173.83x = 1,052,471.38
5. Step 5: Solve for x
   x = 1,052,471.38/1,173.83
6. Step 6: Final answer
   x = 896.62