Finding the Fourth Proportional to 1,007.34, 1,508.67 and 972.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007.34 : 1,508.67 = 972.72 : x
2. Step 2: Convert to fraction form
   1,007.34/1,508.67 = 972.72/x
3. Step 3: Cross multiply
   1,007.34x = 1,508.67 × 972.72
4. Step 4: Simplify right side
   1,007.34x = 1,467,513.48
5. Step 5: Solve for x
   x = 1,467,513.48/1,007.34
6. Step 6: Final answer
   x = 1,456.82