Finding the Fourth Proportional to 1,981.74, 2,734.90 and 1,142.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.74 : 2,734.90 = 1,142.58 : x
2. Step 2: Convert to fraction form
   1,981.74/2,734.90 = 1,142.58/x
3. Step 3: Cross multiply
   1,981.74x = 2,734.90 × 1,142.58
4. Step 4: Simplify right side
   1,981.74x = 3,124,842.04
5. Step 5: Solve for x
   x = 3,124,842.04/1,981.74
6. Step 6: Final answer
   x = 1,576.82