Finding the Fourth Proportional to 2,887.72, 4,329.15 and 1,243.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,887.72 : 4,329.15 = 1,243.01 : x
2. Step 2: Convert to fraction form
   2,887.72/4,329.15 = 1,243.01/x
3. Step 3: Cross multiply
   2,887.72x = 4,329.15 × 1,243.01
4. Step 4: Simplify right side
   2,887.72x = 5,381,182.90
5. Step 5: Solve for x
   x = 5,381,182.90/2,887.72
6. Step 6: Final answer
   x = 1,863.47