Finding the Fourth Proportional to 2,330.16, 3,215.27 and 1,385.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,330.16 : 3,215.27 = 1,385.94 : x
2. Step 2: Convert to fraction form
   2,330.16/3,215.27 = 1,385.94/x
3. Step 3: Cross multiply
   2,330.16x = 3,215.27 × 1,385.94
4. Step 4: Simplify right side
   2,330.16x = 4,456,148.30
5. Step 5: Solve for x
   x = 4,456,148.30/2,330.16
6. Step 6: Final answer
   x = 1,912.38