Finding the Fourth Proportional to 2,657.17, 3,666.90 and 1,478.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.17 : 3,666.90 = 1,478.25 : x
2. Step 2: Convert to fraction form
   2,657.17/3,666.90 = 1,478.25/x
3. Step 3: Cross multiply
   2,657.17x = 3,666.90 × 1,478.25
4. Step 4: Simplify right side
   2,657.17x = 5,420,600.47
5. Step 5: Solve for x
   x = 5,420,600.47/2,657.17
6. Step 6: Final answer
   x = 2,039.99