Finding the Fourth Proportional to 2,157.33, 2,976.34 and 1,411.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157.33 : 2,976.34 = 1,411.72 : x
2. Step 2: Convert to fraction form
   2,157.33/2,976.34 = 1,411.72/x
3. Step 3: Cross multiply
   2,157.33x = 2,976.34 × 1,411.72
4. Step 4: Simplify right side
   2,157.33x = 4,201,758.70
5. Step 5: Solve for x
   x = 4,201,758.70/2,157.33
6. Step 6: Final answer
   x = 1,947.67