Finding the Fourth Proportional to 2,767.48, 4,152.86 and 1,123.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,767.48 : 4,152.86 = 1,123.90 : x
2. Step 2: Convert to fraction form
   2,767.48/4,152.86 = 1,123.90/x
3. Step 3: Cross multiply
   2,767.48x = 4,152.86 × 1,123.90
4. Step 4: Simplify right side
   2,767.48x = 4,667,393.73
5. Step 5: Solve for x
   x = 4,667,393.73/2,767.48
6. Step 6: Final answer
   x = 1,686.51