Finding the Fourth Proportional to 1,981.72, 2,732.94 and 1,272.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.72 : 2,732.94 = 1,272.76 : x
2. Step 2: Convert to fraction form
   1,981.72/2,732.94 = 1,272.76/x
3. Step 3: Cross multiply
   1,981.72x = 2,732.94 × 1,272.76
4. Step 4: Simplify right side
   1,981.72x = 3,478,376.71
5. Step 5: Solve for x
   x = 3,478,376.71/1,981.72
6. Step 6: Final answer
   x = 1,755.23