Finding the Fourth Proportional to 2,155.38, 3,230.31 and 1,375.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.38 : 3,230.31 = 1,375.08 : x
2. Step 2: Convert to fraction form
   2,155.38/3,230.31 = 1,375.08/x
3. Step 3: Cross multiply
   2,155.38x = 3,230.31 × 1,375.08
4. Step 4: Simplify right side
   2,155.38x = 4,441,934.67
5. Step 5: Solve for x
   x = 4,441,934.67/2,155.38
6. Step 6: Final answer
   x = 2,060.86