Finding the Fourth Proportional to 1,173.07, 1,618.89 and 649.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.07 : 1,618.89 = 649.10 : x
2. Step 2: Convert to fraction form
   1,173.07/1,618.89 = 649.10/x
3. Step 3: Cross multiply
   1,173.07x = 1,618.89 × 649.10
4. Step 4: Simplify right side
   1,173.07x = 1,050,825.55
5. Step 5: Solve for x
   x = 1,050,825.55/1,173.07
6. Step 6: Final answer
   x = 895.79