Finding the Fourth Proportional to 2,178.42, 3,265.71 and 1,264.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.42 : 3,265.71 = 1,264.50 : x
2. Step 2: Convert to fraction form
   2,178.42/3,265.71 = 1,264.50/x
3. Step 3: Cross multiply
   2,178.42x = 3,265.71 × 1,264.50
4. Step 4: Simplify right side
   2,178.42x = 4,129,490.30
5. Step 5: Solve for x
   x = 4,129,490.30/2,178.42
6. Step 6: Final answer
   x = 1,895.64