Finding the Fourth Proportional to 1,979.89, 2,731.05 and 1,271.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,979.89 : 2,731.05 = 1,271.49 : x
2. Step 2: Convert to fraction form
   1,979.89/2,731.05 = 1,271.49/x
3. Step 3: Cross multiply
   1,979.89x = 2,731.05 × 1,271.49
4. Step 4: Simplify right side
   1,979.89x = 3,472,502.76
5. Step 5: Solve for x
   x = 3,472,502.76/1,979.89
6. Step 6: Final answer
   x = 1,753.89