Finding the Fourth Proportional to 2,121.62, 2,925.33 and 1,966.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,121.62 : 2,925.33 = 1,966.10 : x
2. Step 2: Convert to fraction form
   2,121.62/2,925.33 = 1,966.10/x
3. Step 3: Cross multiply
   2,121.62x = 2,925.33 × 1,966.10
4. Step 4: Simplify right side
   2,121.62x = 5,751,491.31
5. Step 5: Solve for x
   x = 5,751,491.31/2,121.62
6. Step 6: Final answer
   x = 2,710.90