Finding the Fourth Proportional to 1,384.48, 1,920.37 and 1,334.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.48 : 1,920.37 = 1,334.61 : x
2. Step 2: Convert to fraction form
   1,384.48/1,920.37 = 1,334.61/x
3. Step 3: Cross multiply
   1,384.48x = 1,920.37 × 1,334.61
4. Step 4: Simplify right side
   1,384.48x = 2,562,952.23
5. Step 5: Solve for x
   x = 2,562,952.23/1,384.48
6. Step 6: Final answer
   x = 1,851.20