Finding the Fourth Proportional to 2,381.01, 3,285.72 and 1,318.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.01 : 3,285.72 = 1,318.76 : x
2. Step 2: Convert to fraction form
   2,381.01/3,285.72 = 1,318.76/x
3. Step 3: Cross multiply
   2,381.01x = 3,285.72 × 1,318.76
4. Step 4: Simplify right side
   2,381.01x = 4,333,059.68
5. Step 5: Solve for x
   x = 4,333,059.68/2,381.01
6. Step 6: Final answer
   x = 1,819.84