Finding the Fourth Proportional to 2,181.79, 3,276.67 and 1,142.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.79 : 3,276.67 = 1,142.49 : x
2. Step 2: Convert to fraction form
   2,181.79/3,276.67 = 1,142.49/x
3. Step 3: Cross multiply
   2,181.79x = 3,276.67 × 1,142.49
4. Step 4: Simplify right side
   2,181.79x = 3,743,562.71
5. Step 5: Solve for x
   x = 3,743,562.71/2,181.79
6. Step 6: Final answer
   x = 1,715.82