Finding the Fourth Proportional to 2,748.94, 4,123.34 and 1,289.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748.94 : 4,123.34 = 1,289.74 : x
2. Step 2: Convert to fraction form
   2,748.94/4,123.34 = 1,289.74/x
3. Step 3: Cross multiply
   2,748.94x = 4,123.34 × 1,289.74
4. Step 4: Simplify right side
   2,748.94x = 5,318,036.53
5. Step 5: Solve for x
   x = 5,318,036.53/2,748.94
6. Step 6: Final answer
   x = 1,934.58