Finding the Fourth Proportional to 2,156.25, 2,974.93 and 1,271.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.25 : 2,974.93 = 1,271.89 : x
2. Step 2: Convert to fraction form
   2,156.25/2,974.93 = 1,271.89/x
3. Step 3: Cross multiply
   2,156.25x = 2,974.93 × 1,271.89
4. Step 4: Simplify right side
   2,156.25x = 3,783,767.52
5. Step 5: Solve for x
   x = 3,783,767.52/2,156.25
6. Step 6: Final answer
   x = 1,754.79