Finding the Fourth Proportional to 1,384.86, 2,064.46 and 1,281.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.86 : 2,064.46 = 1,281.18 : x
2. Step 2: Convert to fraction form
   1,384.86/2,064.46 = 1,281.18/x
3. Step 3: Cross multiply
   1,384.86x = 2,064.46 × 1,281.18
4. Step 4: Simplify right side
   1,384.86x = 2,644,944.86
5. Step 5: Solve for x
   x = 2,644,944.86/1,384.86
6. Step 6: Final answer
   x = 1,909.90