Finding the Fourth Proportional to 2,887.52, 4,330.83 and 939.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,887.52 : 4,330.83 = 939.71 : x
2. Step 2: Convert to fraction form
   2,887.52/4,330.83 = 939.71/x
3. Step 3: Cross multiply
   2,887.52x = 4,330.83 × 939.71
4. Step 4: Simplify right side
   2,887.52x = 4,069,738.61
5. Step 5: Solve for x
   x = 4,069,738.61/2,887.52
6. Step 6: Final answer
   x = 1,409.42