Finding the Fourth Proportional to 1,173.15, 1,619.00 and 649.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.15 : 1,619.00 = 649.23 : x
2. Step 2: Convert to fraction form
   1,173.15/1,619.00 = 649.23/x
3. Step 3: Cross multiply
   1,173.15x = 1,619.00 × 649.23
4. Step 4: Simplify right side
   1,173.15x = 1,051,100.12
5. Step 5: Solve for x
   x = 1,051,100.12/1,173.15
6. Step 6: Final answer
   x = 895.96