Finding the Fourth Proportional to 1,981.72, 2,973.30 and 1,007.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.72 : 2,973.30 = 1,007.92 : x
2. Step 2: Convert to fraction form
   1,981.72/2,973.30 = 1,007.92/x
3. Step 3: Cross multiply
   1,981.72x = 2,973.30 × 1,007.92
4. Step 4: Simplify right side
   1,981.72x = 2,996,848.54
5. Step 5: Solve for x
   x = 2,996,848.54/1,981.72
6. Step 6: Final answer
   x = 1,512.25