Finding the Fourth Proportional to 2,303.55, 3,178.80 and 1,255.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,303.55 : 3,178.80 = 1,255.62 : x
2. Step 2: Convert to fraction form
   2,303.55/3,178.80 = 1,255.62/x
3. Step 3: Cross multiply
   2,303.55x = 3,178.80 × 1,255.62
4. Step 4: Simplify right side
   2,303.55x = 3,991,364.86
5. Step 5: Solve for x
   x = 3,991,364.86/2,303.55
6. Step 6: Final answer
   x = 1,732.70