Finding the Fourth Proportional to 2,057.84, 2,840.32 and 1,272.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.84 : 2,840.32 = 1,272.72 : x
2. Step 2: Convert to fraction form
   2,057.84/2,840.32 = 1,272.72/x
3. Step 3: Cross multiply
   2,057.84x = 2,840.32 × 1,272.72
4. Step 4: Simplify right side
   2,057.84x = 3,614,932.07
5. Step 5: Solve for x
   x = 3,614,932.07/2,057.84
6. Step 6: Final answer
   x = 1,756.66