Finding the Fourth Proportional to 2,153.10, 2,971.56 and 1,268.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.10 : 2,971.56 = 1,268.89 : x
2. Step 2: Convert to fraction form
   2,153.10/2,971.56 = 1,268.89/x
3. Step 3: Cross multiply
   2,153.10x = 2,971.56 × 1,268.89
4. Step 4: Simplify right side
   2,153.10x = 3,770,582.77
5. Step 5: Solve for x
   x = 3,770,582.77/2,153.10
6. Step 6: Final answer
   x = 1,751.23