Finding the Fourth Proportional to 2,657.28, 3,667.20 and 1,478.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.28 : 3,667.20 = 1,478.34 : x
2. Step 2: Convert to fraction form
   2,657.28/3,667.20 = 1,478.34/x
3. Step 3: Cross multiply
   2,657.28x = 3,667.20 × 1,478.34
4. Step 4: Simplify right side
   2,657.28x = 5,421,368.45
5. Step 5: Solve for x
   x = 5,421,368.45/2,657.28
6. Step 6: Final answer
   x = 2,040.19