Finding the Fourth Proportional to 3,123.59, 4,680.75 and 1,272.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.59 : 4,680.75 = 1,272.44 : x
2. Step 2: Convert to fraction form
   3,123.59/4,680.75 = 1,272.44/x
3. Step 3: Cross multiply
   3,123.59x = 4,680.75 × 1,272.44
4. Step 4: Simplify right side
   3,123.59x = 5,955,967.17
5. Step 5: Solve for x
   x = 5,955,967.17/3,123.59
6. Step 6: Final answer
   x = 1,906.77