Finding the Fourth Proportional to 2,128.89, 2,937.05 and 1,570.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.89 : 2,937.05 = 1,570.68 : x
2. Step 2: Convert to fraction form
   2,128.89/2,937.05 = 1,570.68/x
3. Step 3: Cross multiply
   2,128.89x = 2,937.05 × 1,570.68
4. Step 4: Simplify right side
   2,128.89x = 4,613,165.69
5. Step 5: Solve for x
   x = 4,613,165.69/2,128.89
6. Step 6: Final answer
   x = 2,166.93