Finding the Fourth Proportional to 2,789.94, 4,186.89 and 1,147.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.94 : 4,186.89 = 1,147.98 : x
2. Step 2: Convert to fraction form
   2,789.94/4,186.89 = 1,147.98/x
3. Step 3: Cross multiply
   2,789.94x = 4,186.89 × 1,147.98
4. Step 4: Simplify right side
   2,789.94x = 4,806,465.98
5. Step 5: Solve for x
   x = 4,806,465.98/2,789.94
6. Step 6: Final answer
   x = 1,722.78