Finding the Fourth Proportional to 2,002.68, 3,002.40 and 906.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.68 : 3,002.40 = 906.48 : x
2. Step 2: Convert to fraction form
   2,002.68/3,002.40 = 906.48/x
3. Step 3: Cross multiply
   2,002.68x = 3,002.40 × 906.48
4. Step 4: Simplify right side
   2,002.68x = 2,721,615.55
5. Step 5: Solve for x
   x = 2,721,615.55/2,002.68
6. Step 6: Final answer
   x = 1,358.99