Finding the Fourth Proportional to 2,043.86, 2,819.40 and 1,381.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043.86 : 2,819.40 = 1,381.64 : x
2. Step 2: Convert to fraction form
   2,043.86/2,819.40 = 1,381.64/x
3. Step 3: Cross multiply
   2,043.86x = 2,819.40 × 1,381.64
4. Step 4: Simplify right side
   2,043.86x = 3,895,395.82
5. Step 5: Solve for x
   x = 3,895,395.82/2,043.86
6. Step 6: Final answer
   x = 1,905.90