Finding the Fourth Proportional to 1,662.20, 2,482.79 and 1,293.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.20 : 2,482.79 = 1,293.15 : x
2. Step 2: Convert to fraction form
   1,662.20/2,482.79 = 1,293.15/x
3. Step 3: Cross multiply
   1,662.20x = 2,482.79 × 1,293.15
4. Step 4: Simplify right side
   1,662.20x = 3,210,608.77
5. Step 5: Solve for x
   x = 3,210,608.77/1,662.20
6. Step 6: Final answer
   x = 1,931.54