Finding the Fourth Proportional to 1,253.52, 1,877.76 and 1,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.52 : 1,877.76 = 1,206.72 : x
2. Step 2: Convert to fraction form
   1,253.52/1,877.76 = 1,206.72/x
3. Step 3: Cross multiply
   1,253.52x = 1,877.76 × 1,206.72
4. Step 4: Simplify right side
   1,253.52x = 2,265,930.55
5. Step 5: Solve for x
   x = 2,265,930.55/1,253.52
6. Step 6: Final answer
   x = 1,807.65