Finding the Fourth Proportional to 2,657.78, 3,667.71 and 1,478.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.78 : 3,667.71 = 1,478.83 : x
2. Step 2: Convert to fraction form
   2,657.78/3,667.71 = 1,478.83/x
3. Step 3: Cross multiply
   2,657.78x = 3,667.71 × 1,478.83
4. Step 4: Simplify right side
   2,657.78x = 5,423,919.58
5. Step 5: Solve for x
   x = 5,423,919.58/2,657.78
6. Step 6: Final answer
   x = 2,040.77