Finding the Fourth Proportional to 2,300.39, 3,175.61 and 1,355.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.39 : 3,175.61 = 1,355.86 : x
2. Step 2: Convert to fraction form
   2,300.39/3,175.61 = 1,355.86/x
3. Step 3: Cross multiply
   2,300.39x = 3,175.61 × 1,355.86
4. Step 4: Simplify right side
   2,300.39x = 4,305,679.76
5. Step 5: Solve for x
   x = 4,305,679.76/2,300.39
6. Step 6: Final answer
   x = 1,871.72