Finding the Fourth Proportional to 2,111.49, 2,914.34 and 1,271.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.49 : 2,914.34 = 1,271.76 : x
2. Step 2: Convert to fraction form
   2,111.49/2,914.34 = 1,271.76/x
3. Step 3: Cross multiply
   2,111.49x = 2,914.34 × 1,271.76
4. Step 4: Simplify right side
   2,111.49x = 3,706,334.68
5. Step 5: Solve for x
   x = 3,706,334.68/2,111.49
6. Step 6: Final answer
   x = 1,755.32