Finding the Fourth Proportional to 2,128.27, 2,936.17 and 1,570.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.27 : 2,936.17 = 1,570.08 : x
2. Step 2: Convert to fraction form
   2,128.27/2,936.17 = 1,570.08/x
3. Step 3: Cross multiply
   2,128.27x = 2,936.17 × 1,570.08
4. Step 4: Simplify right side
   2,128.27x = 4,610,021.79
5. Step 5: Solve for x
   x = 4,610,021.79/2,128.27
6. Step 6: Final answer
   x = 2,166.09