Finding the Fourth Proportional to 2,328.76, 3,214.37 and 1,385.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.76 : 3,214.37 = 1,385.22 : x
2. Step 2: Convert to fraction form
   2,328.76/3,214.37 = 1,385.22/x
3. Step 3: Cross multiply
   2,328.76x = 3,214.37 × 1,385.22
4. Step 4: Simplify right side
   2,328.76x = 4,452,609.61
5. Step 5: Solve for x
   x = 4,452,609.61/2,328.76
6. Step 6: Final answer
   x = 1,912.01