Finding the Fourth Proportional to 2,657.78, 3,667.62 and 1,478.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.78 : 3,667.62 = 1,478.96 : x
2. Step 2: Convert to fraction form
   2,657.78/3,667.62 = 1,478.96/x
3. Step 3: Cross multiply
   2,657.78x = 3,667.62 × 1,478.96
4. Step 4: Simplify right side
   2,657.78x = 5,424,263.28
5. Step 5: Solve for x
   x = 5,424,263.28/2,657.78
6. Step 6: Final answer
   x = 2,040.90