Finding the Fourth Proportional to 2,657.34, 3,667.29 and 1,478.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.34 : 3,667.29 = 1,478.40 : x
2. Step 2: Convert to fraction form
   2,657.34/3,667.29 = 1,478.40/x
3. Step 3: Cross multiply
   2,657.34x = 3,667.29 × 1,478.40
4. Step 4: Simplify right side
   2,657.34x = 5,421,721.54
5. Step 5: Solve for x
   x = 5,421,721.54/2,657.34
6. Step 6: Final answer
   x = 2,040.28