Finding the Fourth Proportional to 2,872.88, 4,309.34 and 1,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,872.88 : 4,309.34 = 1,141.50 : x
2. Step 2: Convert to fraction form
   2,872.88/4,309.34 = 1,141.50/x
3. Step 3: Cross multiply
   2,872.88x = 4,309.34 × 1,141.50
4. Step 4: Simplify right side
   2,872.88x = 4,919,111.61
5. Step 5: Solve for x
   x = 4,919,111.61/2,872.88
6. Step 6: Final answer
   x = 1,712.26