Finding the Fourth Proportional to 2,270.41, 3,132.60 and 1,385.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,270.41 : 3,132.60 = 1,385.89 : x
2. Step 2: Convert to fraction form
   2,270.41/3,132.60 = 1,385.89/x
3. Step 3: Cross multiply
   2,270.41x = 3,132.60 × 1,385.89
4. Step 4: Simplify right side
   2,270.41x = 4,341,439.01
5. Step 5: Solve for x
   x = 4,341,439.01/2,270.41
6. Step 6: Final answer
   x = 1,912.18