Finding the Fourth Proportional to 2,157.88, 2,976.06 and 1,764.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157.88 : 2,976.06 = 1,764.22 : x
2. Step 2: Convert to fraction form
   2,157.88/2,976.06 = 1,764.22/x
3. Step 3: Cross multiply
   2,157.88x = 2,976.06 × 1,764.22
4. Step 4: Simplify right side
   2,157.88x = 5,250,424.57
5. Step 5: Solve for x
   x = 5,250,424.57/2,157.88
6. Step 6: Final answer
   x = 2,433.14