Finding the Fourth Proportional to 2,103.12, 2,903.84 and 1,357.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.12 : 2,903.84 = 1,357.52 : x
2. Step 2: Convert to fraction form
   2,103.12/2,903.84 = 1,357.52/x
3. Step 3: Cross multiply
   2,103.12x = 2,903.84 × 1,357.52
4. Step 4: Simplify right side
   2,103.12x = 3,941,999.57
5. Step 5: Solve for x
   x = 3,941,999.57/2,103.12
6. Step 6: Final answer
   x = 1,874.36