Finding the Fourth Proportional to 2,138.88, 2,951.56 and 1,194.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138.88 : 2,951.56 = 1,194.72 : x
2. Step 2: Convert to fraction form
   2,138.88/2,951.56 = 1,194.72/x
3. Step 3: Cross multiply
   2,138.88x = 2,951.56 × 1,194.72
4. Step 4: Simplify right side
   2,138.88x = 3,526,287.76
5. Step 5: Solve for x
   x = 3,526,287.76/2,138.88
6. Step 6: Final answer
   x = 1,648.66