Finding the Fourth Proportional to 2,874.61, 4,312.71 and 1,144.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,874.61 : 4,312.71 = 1,144.45 : x
2. Step 2: Convert to fraction form
   2,874.61/4,312.71 = 1,144.45/x
3. Step 3: Cross multiply
   2,874.61x = 4,312.71 × 1,144.45
4. Step 4: Simplify right side
   2,874.61x = 4,935,680.96
5. Step 5: Solve for x
   x = 4,935,680.96/2,874.61
6. Step 6: Final answer
   x = 1,716.99