Finding the Fourth Proportional to 1,167.01, 1,748.79 and 646.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.01 : 1,748.79 = 646.38 : x
2. Step 2: Convert to fraction form
   1,167.01/1,748.79 = 646.38/x
3. Step 3: Cross multiply
   1,167.01x = 1,748.79 × 646.38
4. Step 4: Simplify right side
   1,167.01x = 1,130,382.88
5. Step 5: Solve for x
   x = 1,130,382.88/1,167.01
6. Step 6: Final answer
   x = 968.62