Finding the Fourth Proportional to 1,034.72, 1,553.61 and 646.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034.72 : 1,553.61 = 646.38 : x
2. Step 2: Convert to fraction form
   1,034.72/1,553.61 = 646.38/x
3. Step 3: Cross multiply
   1,034.72x = 1,553.61 × 646.38
4. Step 4: Simplify right side
   1,034.72x = 1,004,219.40
5. Step 5: Solve for x
   x = 1,004,219.40/1,034.72
6. Step 6: Final answer
   x = 970.52