Finding the Fourth Proportional to 2,001.76, 3,002.60 and 905.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,001.76 : 3,002.60 = 905.34 : x
2. Step 2: Convert to fraction form
   2,001.76/3,002.60 = 905.34/x
3. Step 3: Cross multiply
   2,001.76x = 3,002.60 × 905.34
4. Step 4: Simplify right side
   2,001.76x = 2,718,373.88
5. Step 5: Solve for x
   x = 2,718,373.88/2,001.76
6. Step 6: Final answer
   x = 1,357.99