Finding the Fourth Proportional to 2,657.16, 3,666.72 and 1,478.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.16 : 3,666.72 = 1,478.19 : x
2. Step 2: Convert to fraction form
   2,657.16/3,666.72 = 1,478.19/x
3. Step 3: Cross multiply
   2,657.16x = 3,666.72 × 1,478.19
4. Step 4: Simplify right side
   2,657.16x = 5,420,108.84
5. Step 5: Solve for x
   x = 5,420,108.84/2,657.16
6. Step 6: Final answer
   x = 2,039.81