Finding the Fourth Proportional to 2,103.35, 2,902.56 and 1,317.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.35 : 2,902.56 = 1,317.83 : x
2. Step 2: Convert to fraction form
   2,103.35/2,902.56 = 1,317.83/x
3. Step 3: Cross multiply
   2,103.35x = 2,902.56 × 1,317.83
4. Step 4: Simplify right side
   2,103.35x = 3,825,080.64
5. Step 5: Solve for x
   x = 3,825,080.64/2,103.35
6. Step 6: Final answer
   x = 1,818.57