Finding the Fourth Proportional to 2,657.71, 3,667.62 and 1,478.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.71 : 3,667.62 = 1,478.78 : x
2. Step 2: Convert to fraction form
   2,657.71/3,667.62 = 1,478.78/x
3. Step 3: Cross multiply
   2,657.71x = 3,667.62 × 1,478.78
4. Step 4: Simplify right side
   2,657.71x = 5,423,603.10
5. Step 5: Solve for x
   x = 5,423,603.10/2,657.71
6. Step 6: Final answer
   x = 2,040.71