Finding the Fourth Proportional to 2,303.46, 3,178.79 and 1,255.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,303.46 : 3,178.79 = 1,255.53 : x
2. Step 2: Convert to fraction form
   2,303.46/3,178.79 = 1,255.53/x
3. Step 3: Cross multiply
   2,303.46x = 3,178.79 × 1,255.53
4. Step 4: Simplify right side
   2,303.46x = 3,991,066.21
5. Step 5: Solve for x
   x = 3,991,066.21/2,303.46
6. Step 6: Final answer
   x = 1,732.64