Finding the Fourth Proportional to 2,657.31, 3,666.98 and 1,478.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.31 : 3,666.98 = 1,478.35 : x
2. Step 2: Convert to fraction form
   2,657.31/3,666.98 = 1,478.35/x
3. Step 3: Cross multiply
   2,657.31x = 3,666.98 × 1,478.35
4. Step 4: Simplify right side
   2,657.31x = 5,421,072.49
5. Step 5: Solve for x
   x = 5,421,072.49/2,657.31
6. Step 6: Final answer
   x = 2,040.06