Finding the Fourth Proportional to 1,173.01, 1,618.76 and 649.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.01 : 1,618.76 = 649.07 : x
2. Step 2: Convert to fraction form
   1,173.01/1,618.76 = 649.07/x
3. Step 3: Cross multiply
   1,173.01x = 1,618.76 × 649.07
4. Step 4: Simplify right side
   1,173.01x = 1,050,688.55
5. Step 5: Solve for x
   x = 1,050,688.55/1,173.01
6. Step 6: Final answer
   x = 895.72