Finding the Fourth Proportional to 2,153.51, 2,970.43 and 1,268.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.51 : 2,970.43 = 1,268.69 : x
2. Step 2: Convert to fraction form
   2,153.51/2,970.43 = 1,268.69/x
3. Step 3: Cross multiply
   2,153.51x = 2,970.43 × 1,268.69
4. Step 4: Simplify right side
   2,153.51x = 3,768,554.84
5. Step 5: Solve for x
   x = 3,768,554.84/2,153.51
6. Step 6: Final answer
   x = 1,749.96