Finding the Fourth Proportional to 2,702.70, 4,050.94 and 1,238.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,702.70 : 4,050.94 = 1,238.78 : x
2. Step 2: Convert to fraction form
   2,702.70/4,050.94 = 1,238.78/x
3. Step 3: Cross multiply
   2,702.70x = 4,050.94 × 1,238.78
4. Step 4: Simplify right side
   2,702.70x = 5,018,223.45
5. Step 5: Solve for x
   x = 5,018,223.45/2,702.70
6. Step 6: Final answer
   x = 1,856.74