Finding the Fourth Proportional to 981.52, 1,471.71 and 673.72

Step by Step Solution

1. Step 1: Write the proportion equation
   981.52 : 1,471.71 = 673.72 : x
2. Step 2: Convert to fraction form
   981.52/1,471.71 = 673.72/x
3. Step 3: Cross multiply
   981.52x = 1,471.71 × 673.72
4. Step 4: Simplify right side
   981.52x = 991,520.46
5. Step 5: Solve for x
   x = 991,520.46/981.52
6. Step 6: Final answer
   x = 1,010.19